diff --git a/en/resources/conversations/index.md b/en/resources/conversations/index.md
index 5171aef..9fd193d 100644
--- a/en/resources/conversations/index.md
+++ b/en/resources/conversations/index.md
@@ -4,11 +4,11 @@
 
 **post** `/conversations`
 
-Create a conversation.
+Create a conversation
 
 ### Body Parameters
 
-- `items: optional array of EasyInputMessage or object { content, role, status, type }  or ResponseOutputMessage or 27 more`
+- `items: optional array of EasyInputMessage or object { content, role, status, type }  or ResponseOutputMessage or 29 more`
 
   Initial items to include in the conversation context. You may add up to 20 items at a time.
 
@@ -34,7 +34,7 @@ Create a conversation.
         A list of one or many input items to the model, containing different content
         types.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -48,9 +48,19 @@ Create a conversation.
 
             - `"input_text"`
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `prompt_cache_breakpoint: optional object { mode }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
+
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
           - `detail: "low" or "high" or "auto" or "original"`
 
@@ -78,7 +88,17 @@ Create a conversation.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -88,9 +108,11 @@ Create a conversation.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -112,6 +134,16 @@ Create a conversation.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
     - `role: "user" or "assistant" or "system" or "developer"`
 
       The role of the message input. One of `user`, `assistant`, `system`, or
@@ -191,7 +223,7 @@ Create a conversation.
 
       The content of the output message.
 
-      - `ResponseOutputText object { annotations, logprobs, text, type }`
+      - `ResponseOutputText object { annotations, text, type, logprobs }`
 
         A text output from the model.
 
@@ -295,15 +327,17 @@ Create a conversation.
 
               - `"file_path"`
 
-        - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+        - `text: string`
 
-          - `token: string`
+          The text output from the model.
 
-          - `bytes: array of number`
+        - `type: "output_text"`
 
-          - `logprob: number`
+          The type of the output text. Always `output_text`.
 
-          - `top_logprobs: array of object { token, bytes, logprob }`
+          - `"output_text"`
+
+        - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
           - `token: string`
 
@@ -311,15 +345,13 @@ Create a conversation.
 
           - `logprob: number`
 
-        - `text: string`
-
-          The text output from the model.
+          - `top_logprobs: array of object { token, bytes, logprob }`
 
-        - `type: "output_text"`
+            - `token: string`
 
-          The type of the output text. Always `output_text`.
+            - `bytes: array of number`
 
-          - `"output_text"`
+            - `logprob: number`
 
       - `ResponseOutputRefusal object { refusal, type }`
 
@@ -371,7 +403,7 @@ Create a conversation.
   - `FileSearchCall object { id, queries, status, 2 more }`
 
     The results of a file search tool call. See the
-    [file search guide](/docs/guides/tools-file-search) for more information.
+    [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
     - `id: string`
 
@@ -439,7 +471,7 @@ Create a conversation.
   - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
     A tool call to a computer use tool. See the
-    [computer use guide](/docs/guides/tools-computer-use) for more information.
+    [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
     - `id: string`
 
@@ -482,7 +514,7 @@ Create a conversation.
 
       - `"computer_call"`
 
-    - `action: optional ComputerAction`
+    - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
       A click action.
 
@@ -686,38 +718,193 @@ Create a conversation.
 
         A click action.
 
+        - `button: "left" or "right" or "wheel" or 2 more`
+
+          Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
+
+          - `"left"`
+
+          - `"right"`
+
+          - `"wheel"`
+
+          - `"back"`
+
+          - `"forward"`
+
+        - `type: "click"`
+
+          Specifies the event type. For a click action, this property is always `click`.
+
+          - `"click"`
+
+        - `x: number`
+
+          The x-coordinate where the click occurred.
+
+        - `y: number`
+
+          The y-coordinate where the click occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while clicking.
+
       - `DoubleClick object { keys, type, x, y }`
 
         A double click action.
 
+        - `keys: array of string`
+
+          The keys being held while double-clicking.
+
+        - `type: "double_click"`
+
+          Specifies the event type. For a double click action, this property is always set to `double_click`.
+
+          - `"double_click"`
+
+        - `x: number`
+
+          The x-coordinate where the double click occurred.
+
+        - `y: number`
+
+          The y-coordinate where the double click occurred.
+
       - `Drag object { path, type, keys }`
 
         A drag action.
 
+        - `path: array of object { x, y }`
+
+          An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
+
+          ```
+          [
+            { x: 100, y: 200 },
+            { x: 200, y: 300 }
+          ]
+          ```
+
+          - `x: number`
+
+            The x-coordinate.
+
+          - `y: number`
+
+            The y-coordinate.
+
+        - `type: "drag"`
+
+          Specifies the event type. For a drag action, this property is always set to `drag`.
+
+          - `"drag"`
+
+        - `keys: optional array of string`
+
+          The keys being held while dragging the mouse.
+
       - `Keypress object { keys, type }`
 
         A collection of keypresses the model would like to perform.
 
+        - `keys: array of string`
+
+          The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+        - `type: "keypress"`
+
+          Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+          - `"keypress"`
+
       - `Move object { type, x, y, keys }`
 
         A mouse move action.
 
+        - `type: "move"`
+
+          Specifies the event type. For a move action, this property is always set to `move`.
+
+          - `"move"`
+
+        - `x: number`
+
+          The x-coordinate to move to.
+
+        - `y: number`
+
+          The y-coordinate to move to.
+
+        - `keys: optional array of string`
+
+          The keys being held while moving the mouse.
+
       - `Screenshot object { type }`
 
         A screenshot action.
 
+        - `type: "screenshot"`
+
+          Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+          - `"screenshot"`
+
       - `Scroll object { scroll_x, scroll_y, type, 3 more }`
 
         A scroll action.
 
+        - `scroll_x: number`
+
+          The horizontal scroll distance.
+
+        - `scroll_y: number`
+
+          The vertical scroll distance.
+
+        - `type: "scroll"`
+
+          Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+          - `"scroll"`
+
+        - `x: number`
+
+          The x-coordinate where the scroll occurred.
+
+        - `y: number`
+
+          The y-coordinate where the scroll occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while scrolling.
+
       - `Type object { text, type }`
 
         An action to type in text.
 
+        - `text: string`
+
+          The text to type.
+
+        - `type: "type"`
+
+          Specifies the event type. For a type action, this property is always set to `type`.
+
+          - `"type"`
+
       - `Wait object { type }`
 
         A wait action.
 
+        - `type: "wait"`
+
+          Specifies the event type. For a wait action, this property is always set to `wait`.
+
+          - `"wait"`
+
   - `ComputerCallOutput object { call_id, output, type, 3 more }`
 
     The output of a computer tool call.
@@ -784,7 +971,7 @@ Create a conversation.
   - `WebSearchCall object { id, action, status, type }`
 
     The results of a web search tool call. See the
-    [web search guide](/docs/guides/tools-web-search) for more information.
+    [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
     - `id: string`
 
@@ -877,10 +1064,10 @@ Create a conversation.
 
       - `"web_search_call"`
 
-  - `FunctionCall object { arguments, call_id, name, 4 more }`
+  - `FunctionCall object { arguments, call_id, name, 5 more }`
 
     A tool call to run a function. See the
-    [function calling guide](/docs/guides/function-calling) for more information.
+    [function calling guide](https://platform.openai.com/docs/guides/function-calling) for more information.
 
     - `arguments: string`
 
@@ -904,6 +1091,26 @@ Create a conversation.
 
       The unique ID of the function tool call.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the function to run.
@@ -919,7 +1126,7 @@ Create a conversation.
 
       - `"incomplete"`
 
-  - `FunctionCallOutput object { call_id, output, type, 2 more }`
+  - `FunctionCallOutput object { call_id, output, type, 3 more }`
 
     The output of a function tool call.
 
@@ -927,7 +1134,7 @@ Create a conversation.
 
       The unique ID of the function tool call generated by the model.
 
-    - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent`
+    - `output: string or ResponseFunctionCallOutputItemList`
 
       Text, image, or file output of the function tool call.
 
@@ -935,11 +1142,11 @@ Create a conversation.
 
         A JSON string of the output of the function tool call.
 
-      - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent`
+      - `ResponseFunctionCallOutputItemList = array of ResponseFunctionCallOutputItem`
 
         An array of content outputs (text, image, file) for the function tool call.
 
-        - `ResponseInputTextContent object { text, type }`
+        - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -953,9 +1160,19 @@ Create a conversation.
 
             - `"input_text"`
 
-        - `ResponseInputImageContent object { type, detail, file_id, image_url }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision)
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputImageContent object { type, detail, file_id, 2 more }`
+
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision)
 
           - `type: "input_image"`
 
@@ -983,7 +1200,17 @@ Create a conversation.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ResponseInputFileContent object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFileContent object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -993,9 +1220,11 @@ Create a conversation.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -1017,6 +1246,16 @@ Create a conversation.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
     - `type: "function_call_output"`
 
       The type of the function tool call output. Always `function_call_output`.
@@ -1027,6 +1266,30 @@ Create a conversation.
 
       The unique ID of the function tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `status: optional "in_progress" or "completed" or "incomplete"`
 
       The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API.
@@ -1077,11 +1340,11 @@ Create a conversation.
 
   - `ToolSearchOutput object { tools, type, id, 3 more }`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The loaded tool definitions returned by the tool search output.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -1095,7 +1358,7 @@ Create a conversation.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -1103,6 +1366,14 @@ Create a conversation.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -1111,6 +1382,10 @@ Create a conversation.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -1281,7 +1556,7 @@ Create a conversation.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -1338,10 +1613,10 @@ Create a conversation.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -1353,6 +1628,14 @@ Create a conversation.
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -1385,7 +1668,7 @@ Create a conversation.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -1485,7 +1768,7 @@ Create a conversation.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -1571,6 +1854,22 @@ Create a conversation.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -1593,8 +1892,19 @@ Create a conversation.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -1623,13 +1933,13 @@ Create a conversation.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -1637,8 +1947,14 @@ Create a conversation.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -1707,7 +2023,7 @@ Create a conversation.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -1717,9 +2033,17 @@ Create a conversation.
 
           - `"shell"`
 
-        - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
+        - `allowed_callers: optional array of "direct" or "programmatic"`
 
-          - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+        - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
+
+          - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
 
             - `type: "container_auto"`
 
@@ -1843,9 +2167,9 @@ Create a conversation.
 
               - `"container_reference"`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -1857,6 +2181,14 @@ Create a conversation.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -1913,11 +2245,11 @@ Create a conversation.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -1925,19 +2257,33 @@ Create a conversation.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          - `Custom object { name, type, allowed_callers, 3 more }`
+
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -1949,6 +2295,14 @@ Create a conversation.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -2047,7 +2401,7 @@ Create a conversation.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -2057,6 +2411,14 @@ Create a conversation.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "tool_search_output"`
 
       The item type. Always `tool_search_output`.
@@ -2097,11 +2459,11 @@ Create a conversation.
 
       - `"developer"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       A list of additional tools made available at this item.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -2115,7 +2477,7 @@ Create a conversation.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -2123,6 +2485,14 @@ Create a conversation.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -2131,6 +2501,10 @@ Create a conversation.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -2234,7 +2608,7 @@ Create a conversation.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -2291,10 +2665,10 @@ Create a conversation.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -2306,6 +2680,14 @@ Create a conversation.
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -2338,7 +2720,7 @@ Create a conversation.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -2438,7 +2820,7 @@ Create a conversation.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -2492,6 +2874,22 @@ Create a conversation.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -2514,8 +2912,19 @@ Create a conversation.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -2544,13 +2953,13 @@ Create a conversation.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -2558,8 +2967,14 @@ Create a conversation.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -2628,7 +3043,7 @@ Create a conversation.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -2638,6 +3053,14 @@ Create a conversation.
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -2646,9 +3069,9 @@ Create a conversation.
 
           - `ContainerReference object { container_id, type }`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -2660,6 +3083,14 @@ Create a conversation.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -2684,11 +3115,11 @@ Create a conversation.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -2696,19 +3127,33 @@ Create a conversation.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          - `Custom object { name, type, allowed_callers, 3 more }`
+
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -2720,6 +3165,14 @@ Create a conversation.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -2818,7 +3271,7 @@ Create a conversation.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -2828,6 +3281,14 @@ Create a conversation.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "additional_tools"`
 
       The item type. Always `additional_tools`.
@@ -2843,13 +3304,13 @@ Create a conversation.
     A description of the chain of thought used by a reasoning model while generating
     a response. Be sure to include these items in your `input` to the Responses API
     for subsequent turns of a conversation if you are manually
-    [managing context](/docs/guides/conversation-state).
+    [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
     - `id: string`
 
       The unique identifier of the reasoning content.
 
-    - `summary: array of SummaryTextContent`
+    - `summary: array of object { text, type }`
 
       Reasoning summary content.
 
@@ -2901,7 +3362,7 @@ Create a conversation.
 
   - `Compaction object { encrypted_content, type, id }`
 
-    A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+    A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
 
     - `encrypted_content: string`
 
@@ -3102,7 +3563,7 @@ Create a conversation.
 
       - `"incomplete"`
 
-  - `ShellCall object { action, call_id, type, 3 more }`
+  - `ShellCall object { action, call_id, type, 4 more }`
 
     A tool representing a request to execute one or more shell commands.
 
@@ -3136,6 +3597,30 @@ Create a conversation.
 
       The unique ID of the shell tool call. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `environment: optional LocalEnvironment or ContainerReference`
 
       The environment to execute the shell commands in.
@@ -3154,7 +3639,7 @@ Create a conversation.
 
       - `"incomplete"`
 
-  - `ShellCallOutput object { call_id, output, type, 3 more }`
+  - `ShellCallOutput object { call_id, output, type, 4 more }`
 
     The streamed output items emitted by a shell tool call.
 
@@ -3212,6 +3697,30 @@ Create a conversation.
 
       The unique ID of the shell tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `max_output_length: optional number`
 
       The maximum number of UTF-8 characters captured for this shell call's combined output.
@@ -3226,7 +3735,7 @@ Create a conversation.
 
       - `"incomplete"`
 
-  - `ApplyPatchCall object { call_id, operation, status, 2 more }`
+  - `ApplyPatchCall object { call_id, operation, status, 3 more }`
 
     A tool call representing a request to create, delete, or update files using diff patches.
 
@@ -3306,7 +3815,31 @@ Create a conversation.
 
       The unique ID of the apply patch tool call. Populated when this item is returned via API.
 
-  - `ApplyPatchCallOutput object { call_id, status, type, 2 more }`
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
+  - `ApplyPatchCallOutput object { call_id, status, type, 3 more }`
 
     The streamed output emitted by an apply patch tool call.
 
@@ -3332,6 +3865,30 @@ Create a conversation.
 
       The unique ID of the apply patch tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `output: optional string`
 
       Optional human-readable log text from the apply patch tool (e.g., patch results or errors).
@@ -3483,7 +4040,7 @@ Create a conversation.
 
       - `"failed"`
 
-  - `CustomToolCallOutput object { call_id, output, type, id }`
+  - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
     The output of a custom tool call from your code, being sent back to the model.
 
@@ -3504,15 +4061,15 @@ Create a conversation.
 
         Text, image, or file output of the custom tool call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -3526,7 +4083,31 @@ Create a conversation.
 
       The unique ID of the custom tool call output in the OpenAI platform.
 
-  - `CustomToolCall object { call_id, input, name, 3 more }`
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
+  - `CustomToolCall object { call_id, input, name, 4 more }`
 
     A call to a custom tool created by the model.
 
@@ -3552,6 +4133,26 @@ Create a conversation.
 
       The unique ID of the custom tool call in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the custom tool being called.
@@ -3580,6 +4181,58 @@ Create a conversation.
 
       - `"item_reference"`
 
+  - `Program object { id, call_id, code, 2 more }`
+
+    - `id: string`
+
+      The unique ID of this program item.
+
+    - `call_id: string`
+
+      The stable call ID of the program item.
+
+    - `code: string`
+
+      The JavaScript source executed by programmatic tool calling.
+
+    - `fingerprint: string`
+
+      Opaque program replay fingerprint that must be round-tripped.
+
+    - `type: "program"`
+
+      The item type. Always `program`.
+
+      - `"program"`
+
+  - `ProgramOutput object { id, call_id, result, 2 more }`
+
+    - `id: string`
+
+      The unique ID of this program output item.
+
+    - `call_id: string`
+
+      The call ID of the program item.
+
+    - `result: string`
+
+      The result produced by the program item.
+
+    - `status: "completed" or "incomplete"`
+
+      The terminal status of the program output.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+    - `type: "program_output"`
+
+      The item type. Always `program_output`.
+
+      - `"program_output"`
+
 - `metadata: optional Metadata`
 
   Set of 16 key-value pairs that can be attached to an object. This can be
@@ -3664,7 +4317,7 @@ curl https://api.openai.com/v1/conversations \
 
 **get** `/conversations/{conversation_id}`
 
-Get a conversation
+Retrieve a conversation
 
 ### Path Parameters
 
@@ -3823,7 +4476,7 @@ curl https://api.openai.com/v1/conversations/conv_123 \
 
 **delete** `/conversations/{conversation_id}`
 
-Delete a conversation. Items in the conversation will not be deleted.
+Delete a conversation
 
 ### Path Parameters
 
@@ -3880,7 +4533,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
 ### Computer Screenshot Content
 
-- `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+- `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
   A screenshot of a computer.
 
@@ -3910,6 +4563,16 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
     - `"computer_screenshot"`
 
+  - `prompt_cache_breakpoint: optional object { mode }`
+
+    Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+    - `mode: "explicit"`
+
+      The breakpoint mode. Always `explicit`.
+
+      - `"explicit"`
+
 ### Conversation
 
 - `Conversation object { id, created_at, metadata, object }`
@@ -3971,7 +4634,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
     The content of the message
 
-    - `ResponseInputText object { text, type }`
+    - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
       A text input to the model.
 
@@ -3985,7 +4648,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         - `"input_text"`
 
-    - `ResponseOutputText object { annotations, logprobs, text, type }`
+      - `prompt_cache_breakpoint: optional object { mode }`
+
+        Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+        - `mode: "explicit"`
+
+          The breakpoint mode. Always `explicit`.
+
+          - `"explicit"`
+
+    - `ResponseOutputText object { annotations, text, type, logprobs }`
 
       A text output from the model.
 
@@ -4089,15 +4762,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
             - `"file_path"`
 
-      - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+      - `text: string`
 
-        - `token: string`
+        The text output from the model.
 
-        - `bytes: array of number`
+      - `type: "output_text"`
 
-        - `logprob: number`
+        The type of the output text. Always `output_text`.
 
-        - `top_logprobs: array of object { token, bytes, logprob }`
+        - `"output_text"`
+
+      - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
         - `token: string`
 
@@ -4105,15 +4780,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         - `logprob: number`
 
-      - `text: string`
-
-        The text output from the model.
+        - `top_logprobs: array of object { token, bytes, logprob }`
 
-      - `type: "output_text"`
+          - `token: string`
 
-        The type of the output text. Always `output_text`.
+          - `bytes: array of number`
 
-        - `"output_text"`
+          - `logprob: number`
 
     - `TextContent object { text, type }`
 
@@ -4167,9 +4840,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         - `"refusal"`
 
-    - `ResponseInputImage object { detail, type, file_id, image_url }`
+    - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-      An image input to the model. Learn about [image inputs](/docs/guides/vision).
+      An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
       - `detail: "low" or "high" or "auto" or "original"`
 
@@ -4197,7 +4870,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-    - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+      - `prompt_cache_breakpoint: optional object { mode }`
+
+        Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+        - `mode: "explicit"`
+
+          The breakpoint mode. Always `explicit`.
+
+          - `"explicit"`
+
+    - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
       A screenshot of a computer.
 
@@ -4227,7 +4910,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         - `"computer_screenshot"`
 
-    - `ResponseInputFile object { type, detail, file_data, 3 more }`
+      - `prompt_cache_breakpoint: optional object { mode }`
+
+        Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+        - `mode: "explicit"`
+
+          The breakpoint mode. Always `explicit`.
+
+          - `"explicit"`
+
+    - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
       A file input to the model.
 
@@ -4237,9 +4930,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         - `"input_file"`
 
-      - `detail: optional "low" or "high"`
+      - `detail: optional "auto" or "low" or "high"`
+
+        The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
 
-        The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+        - `"auto"`
 
         - `"low"`
 
@@ -4261,6 +4956,16 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
         The name of the file to be sent to the model.
 
+      - `prompt_cache_breakpoint: optional object { mode }`
+
+        Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+        - `mode: "explicit"`
+
+          The breakpoint mode. Always `explicit`.
+
+          - `"explicit"`
+
   - `role: "unknown" or "user" or "assistant" or 5 more`
 
     The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -4339,7 +5044,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123 \
 
 **post** `/conversations/{conversation_id}/items`
 
-Create items in a conversation with the given ID.
+Create items
 
 ### Path Parameters
 
@@ -4350,7 +5055,7 @@ Create items in a conversation with the given ID.
 - `include: optional array of ResponseIncludable`
 
   Additional fields to include in the response. See the `include`
-  parameter for [listing Conversation items above](/docs/api-reference/conversations/list-items#conversations_list_items-include) for more information.
+  parameter for [listing Conversation items above](https://platform.openai.com/docs/api-reference/conversations/list-items#conversations_list_items-include) for more information.
 
   - `"file_search_call.results"`
 
@@ -4370,7 +5075,7 @@ Create items in a conversation with the given ID.
 
 ### Body Parameters
 
-- `items: array of EasyInputMessage or object { content, role, status, type }  or ResponseOutputMessage or 27 more`
+- `items: array of EasyInputMessage or object { content, role, status, type }  or ResponseOutputMessage or 29 more`
 
   The items to add to the conversation. You may add up to 20 items at a time.
 
@@ -4396,7 +5101,7 @@ Create items in a conversation with the given ID.
         A list of one or many input items to the model, containing different content
         types.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -4410,9 +5115,19 @@ Create items in a conversation with the given ID.
 
             - `"input_text"`
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
+
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
           - `detail: "low" or "high" or "auto" or "original"`
 
@@ -4440,7 +5155,17 @@ Create items in a conversation with the given ID.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -4450,9 +5175,11 @@ Create items in a conversation with the given ID.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -4474,6 +5201,16 @@ Create items in a conversation with the given ID.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
     - `role: "user" or "assistant" or "system" or "developer"`
 
       The role of the message input. One of `user`, `assistant`, `system`, or
@@ -4553,7 +5290,7 @@ Create items in a conversation with the given ID.
 
       The content of the output message.
 
-      - `ResponseOutputText object { annotations, logprobs, text, type }`
+      - `ResponseOutputText object { annotations, text, type, logprobs }`
 
         A text output from the model.
 
@@ -4657,7 +5394,17 @@ Create items in a conversation with the given ID.
 
               - `"file_path"`
 
-        - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+        - `text: string`
+
+          The text output from the model.
+
+        - `type: "output_text"`
+
+          The type of the output text. Always `output_text`.
+
+          - `"output_text"`
+
+        - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
           - `token: string`
 
@@ -4673,21 +5420,11 @@ Create items in a conversation with the given ID.
 
             - `logprob: number`
 
-        - `text: string`
+      - `ResponseOutputRefusal object { refusal, type }`
 
-          The text output from the model.
+        A refusal from the model.
 
-        - `type: "output_text"`
-
-          The type of the output text. Always `output_text`.
-
-          - `"output_text"`
-
-      - `ResponseOutputRefusal object { refusal, type }`
-
-        A refusal from the model.
-
-        - `refusal: string`
+        - `refusal: string`
 
           The refusal explanation from the model.
 
@@ -4733,7 +5470,7 @@ Create items in a conversation with the given ID.
   - `FileSearchCall object { id, queries, status, 2 more }`
 
     The results of a file search tool call. See the
-    [file search guide](/docs/guides/tools-file-search) for more information.
+    [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
     - `id: string`
 
@@ -4801,7 +5538,7 @@ Create items in a conversation with the given ID.
   - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
     A tool call to a computer use tool. See the
-    [computer use guide](/docs/guides/tools-computer-use) for more information.
+    [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
     - `id: string`
 
@@ -4844,7 +5581,7 @@ Create items in a conversation with the given ID.
 
       - `"computer_call"`
 
-    - `action: optional ComputerAction`
+    - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
       A click action.
 
@@ -5048,38 +5785,193 @@ Create items in a conversation with the given ID.
 
         A click action.
 
+        - `button: "left" or "right" or "wheel" or 2 more`
+
+          Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
+
+          - `"left"`
+
+          - `"right"`
+
+          - `"wheel"`
+
+          - `"back"`
+
+          - `"forward"`
+
+        - `type: "click"`
+
+          Specifies the event type. For a click action, this property is always `click`.
+
+          - `"click"`
+
+        - `x: number`
+
+          The x-coordinate where the click occurred.
+
+        - `y: number`
+
+          The y-coordinate where the click occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while clicking.
+
       - `DoubleClick object { keys, type, x, y }`
 
         A double click action.
 
+        - `keys: array of string`
+
+          The keys being held while double-clicking.
+
+        - `type: "double_click"`
+
+          Specifies the event type. For a double click action, this property is always set to `double_click`.
+
+          - `"double_click"`
+
+        - `x: number`
+
+          The x-coordinate where the double click occurred.
+
+        - `y: number`
+
+          The y-coordinate where the double click occurred.
+
       - `Drag object { path, type, keys }`
 
         A drag action.
 
+        - `path: array of object { x, y }`
+
+          An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
+
+          ```
+          [
+            { x: 100, y: 200 },
+            { x: 200, y: 300 }
+          ]
+          ```
+
+          - `x: number`
+
+            The x-coordinate.
+
+          - `y: number`
+
+            The y-coordinate.
+
+        - `type: "drag"`
+
+          Specifies the event type. For a drag action, this property is always set to `drag`.
+
+          - `"drag"`
+
+        - `keys: optional array of string`
+
+          The keys being held while dragging the mouse.
+
       - `Keypress object { keys, type }`
 
         A collection of keypresses the model would like to perform.
 
+        - `keys: array of string`
+
+          The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+        - `type: "keypress"`
+
+          Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+          - `"keypress"`
+
       - `Move object { type, x, y, keys }`
 
         A mouse move action.
 
+        - `type: "move"`
+
+          Specifies the event type. For a move action, this property is always set to `move`.
+
+          - `"move"`
+
+        - `x: number`
+
+          The x-coordinate to move to.
+
+        - `y: number`
+
+          The y-coordinate to move to.
+
+        - `keys: optional array of string`
+
+          The keys being held while moving the mouse.
+
       - `Screenshot object { type }`
 
         A screenshot action.
 
+        - `type: "screenshot"`
+
+          Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+          - `"screenshot"`
+
       - `Scroll object { scroll_x, scroll_y, type, 3 more }`
 
         A scroll action.
 
+        - `scroll_x: number`
+
+          The horizontal scroll distance.
+
+        - `scroll_y: number`
+
+          The vertical scroll distance.
+
+        - `type: "scroll"`
+
+          Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+          - `"scroll"`
+
+        - `x: number`
+
+          The x-coordinate where the scroll occurred.
+
+        - `y: number`
+
+          The y-coordinate where the scroll occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while scrolling.
+
       - `Type object { text, type }`
 
         An action to type in text.
 
+        - `text: string`
+
+          The text to type.
+
+        - `type: "type"`
+
+          Specifies the event type. For a type action, this property is always set to `type`.
+
+          - `"type"`
+
       - `Wait object { type }`
 
         A wait action.
 
+        - `type: "wait"`
+
+          Specifies the event type. For a wait action, this property is always set to `wait`.
+
+          - `"wait"`
+
   - `ComputerCallOutput object { call_id, output, type, 3 more }`
 
     The output of a computer tool call.
@@ -5146,7 +6038,7 @@ Create items in a conversation with the given ID.
   - `WebSearchCall object { id, action, status, type }`
 
     The results of a web search tool call. See the
-    [web search guide](/docs/guides/tools-web-search) for more information.
+    [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
     - `id: string`
 
@@ -5239,10 +6131,10 @@ Create items in a conversation with the given ID.
 
       - `"web_search_call"`
 
-  - `FunctionCall object { arguments, call_id, name, 4 more }`
+  - `FunctionCall object { arguments, call_id, name, 5 more }`
 
     A tool call to run a function. See the
-    [function calling guide](/docs/guides/function-calling) for more information.
+    [function calling guide](https://platform.openai.com/docs/guides/function-calling) for more information.
 
     - `arguments: string`
 
@@ -5266,6 +6158,26 @@ Create items in a conversation with the given ID.
 
       The unique ID of the function tool call.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the function to run.
@@ -5281,7 +6193,7 @@ Create items in a conversation with the given ID.
 
       - `"incomplete"`
 
-  - `FunctionCallOutput object { call_id, output, type, 2 more }`
+  - `FunctionCallOutput object { call_id, output, type, 3 more }`
 
     The output of a function tool call.
 
@@ -5289,7 +6201,7 @@ Create items in a conversation with the given ID.
 
       The unique ID of the function tool call generated by the model.
 
-    - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent`
+    - `output: string or ResponseFunctionCallOutputItemList`
 
       Text, image, or file output of the function tool call.
 
@@ -5297,11 +6209,11 @@ Create items in a conversation with the given ID.
 
         A JSON string of the output of the function tool call.
 
-      - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent`
+      - `ResponseFunctionCallOutputItemList = array of ResponseFunctionCallOutputItem`
 
         An array of content outputs (text, image, file) for the function tool call.
 
-        - `ResponseInputTextContent object { text, type }`
+        - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -5315,9 +6227,19 @@ Create items in a conversation with the given ID.
 
             - `"input_text"`
 
-        - `ResponseInputImageContent object { type, detail, file_id, image_url }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision)
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputImageContent object { type, detail, file_id, 2 more }`
+
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision)
 
           - `type: "input_image"`
 
@@ -5345,7 +6267,17 @@ Create items in a conversation with the given ID.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ResponseInputFileContent object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFileContent object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -5355,9 +6287,11 @@ Create items in a conversation with the given ID.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -5379,6 +6313,16 @@ Create items in a conversation with the given ID.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
     - `type: "function_call_output"`
 
       The type of the function tool call output. Always `function_call_output`.
@@ -5389,6 +6333,30 @@ Create items in a conversation with the given ID.
 
       The unique ID of the function tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `status: optional "in_progress" or "completed" or "incomplete"`
 
       The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API.
@@ -5439,11 +6407,11 @@ Create items in a conversation with the given ID.
 
   - `ToolSearchOutput object { tools, type, id, 3 more }`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The loaded tool definitions returned by the tool search output.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -5457,7 +6425,7 @@ Create items in a conversation with the given ID.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -5465,6 +6433,14 @@ Create items in a conversation with the given ID.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -5473,6 +6449,10 @@ Create items in a conversation with the given ID.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -5643,7 +6623,7 @@ Create items in a conversation with the given ID.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -5700,10 +6680,10 @@ Create items in a conversation with the given ID.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -5715,6 +6695,14 @@ Create items in a conversation with the given ID.
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -5747,7 +6735,7 @@ Create items in a conversation with the given ID.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -5847,7 +6835,7 @@ Create items in a conversation with the given ID.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -5933,6 +6921,22 @@ Create items in a conversation with the given ID.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -5955,8 +6959,19 @@ Create items in a conversation with the given ID.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -5985,13 +7000,13 @@ Create items in a conversation with the given ID.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -5999,8 +7014,14 @@ Create items in a conversation with the given ID.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -6069,7 +7090,7 @@ Create items in a conversation with the given ID.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -6079,6 +7100,14 @@ Create items in a conversation with the given ID.
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -6205,9 +7234,9 @@ Create items in a conversation with the given ID.
 
               - `"container_reference"`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -6219,6 +7248,14 @@ Create items in a conversation with the given ID.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -6275,11 +7312,11 @@ Create items in a conversation with the given ID.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -6287,19 +7324,33 @@ Create items in a conversation with the given ID.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          - `Custom object { name, type, allowed_callers, 3 more }`
+
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -6311,6 +7362,14 @@ Create items in a conversation with the given ID.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -6409,7 +7468,7 @@ Create items in a conversation with the given ID.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -6419,6 +7478,14 @@ Create items in a conversation with the given ID.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "tool_search_output"`
 
       The item type. Always `tool_search_output`.
@@ -6459,11 +7526,11 @@ Create items in a conversation with the given ID.
 
       - `"developer"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       A list of additional tools made available at this item.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -6477,7 +7544,7 @@ Create items in a conversation with the given ID.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -6485,6 +7552,14 @@ Create items in a conversation with the given ID.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -6493,6 +7568,10 @@ Create items in a conversation with the given ID.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -6596,7 +7675,7 @@ Create items in a conversation with the given ID.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -6653,10 +7732,10 @@ Create items in a conversation with the given ID.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -6668,7 +7747,15 @@ Create items in a conversation with the given ID.
 
           - `"mcp"`
 
-        - `allowed_tools: optional array of string or object { read_only, tool_names }`
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+        - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
 
@@ -6700,7 +7787,7 @@ Create items in a conversation with the given ID.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -6800,7 +7887,7 @@ Create items in a conversation with the given ID.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -6854,6 +7941,22 @@ Create items in a conversation with the given ID.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -6876,8 +7979,19 @@ Create items in a conversation with the given ID.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -6906,13 +8020,13 @@ Create items in a conversation with the given ID.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -6920,8 +8034,14 @@ Create items in a conversation with the given ID.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -6990,7 +8110,7 @@ Create items in a conversation with the given ID.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -7000,6 +8120,14 @@ Create items in a conversation with the given ID.
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -7008,9 +8136,9 @@ Create items in a conversation with the given ID.
 
           - `ContainerReference object { container_id, type }`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -7022,6 +8150,14 @@ Create items in a conversation with the given ID.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -7046,11 +8182,11 @@ Create items in a conversation with the given ID.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -7058,19 +8194,33 @@ Create items in a conversation with the given ID.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          - `Custom object { name, type, allowed_callers, 3 more }`
+
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -7082,6 +8232,14 @@ Create items in a conversation with the given ID.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -7180,7 +8338,7 @@ Create items in a conversation with the given ID.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -7190,6 +8348,14 @@ Create items in a conversation with the given ID.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "additional_tools"`
 
       The item type. Always `additional_tools`.
@@ -7205,13 +8371,13 @@ Create items in a conversation with the given ID.
     A description of the chain of thought used by a reasoning model while generating
     a response. Be sure to include these items in your `input` to the Responses API
     for subsequent turns of a conversation if you are manually
-    [managing context](/docs/guides/conversation-state).
+    [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
     - `id: string`
 
       The unique identifier of the reasoning content.
 
-    - `summary: array of SummaryTextContent`
+    - `summary: array of object { text, type }`
 
       Reasoning summary content.
 
@@ -7263,7 +8429,7 @@ Create items in a conversation with the given ID.
 
   - `Compaction object { encrypted_content, type, id }`
 
-    A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+    A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
 
     - `encrypted_content: string`
 
@@ -7464,7 +8630,7 @@ Create items in a conversation with the given ID.
 
       - `"incomplete"`
 
-  - `ShellCall object { action, call_id, type, 3 more }`
+  - `ShellCall object { action, call_id, type, 4 more }`
 
     A tool representing a request to execute one or more shell commands.
 
@@ -7498,6 +8664,30 @@ Create items in a conversation with the given ID.
 
       The unique ID of the shell tool call. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `environment: optional LocalEnvironment or ContainerReference`
 
       The environment to execute the shell commands in.
@@ -7516,7 +8706,7 @@ Create items in a conversation with the given ID.
 
       - `"incomplete"`
 
-  - `ShellCallOutput object { call_id, output, type, 3 more }`
+  - `ShellCallOutput object { call_id, output, type, 4 more }`
 
     The streamed output items emitted by a shell tool call.
 
@@ -7574,6 +8764,30 @@ Create items in a conversation with the given ID.
 
       The unique ID of the shell tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `max_output_length: optional number`
 
       The maximum number of UTF-8 characters captured for this shell call's combined output.
@@ -7588,7 +8802,7 @@ Create items in a conversation with the given ID.
 
       - `"incomplete"`
 
-  - `ApplyPatchCall object { call_id, operation, status, 2 more }`
+  - `ApplyPatchCall object { call_id, operation, status, 3 more }`
 
     A tool call representing a request to create, delete, or update files using diff patches.
 
@@ -7668,7 +8882,31 @@ Create items in a conversation with the given ID.
 
       The unique ID of the apply patch tool call. Populated when this item is returned via API.
 
-  - `ApplyPatchCallOutput object { call_id, status, type, 2 more }`
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
+  - `ApplyPatchCallOutput object { call_id, status, type, 3 more }`
 
     The streamed output emitted by an apply patch tool call.
 
@@ -7694,6 +8932,30 @@ Create items in a conversation with the given ID.
 
       The unique ID of the apply patch tool call output. Populated when this item is returned via API.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `output: optional string`
 
       Optional human-readable log text from the apply patch tool (e.g., patch results or errors).
@@ -7845,7 +9107,7 @@ Create items in a conversation with the given ID.
 
       - `"failed"`
 
-  - `CustomToolCallOutput object { call_id, output, type, id }`
+  - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
     The output of a custom tool call from your code, being sent back to the model.
 
@@ -7866,15 +9128,15 @@ Create items in a conversation with the given ID.
 
         Text, image, or file output of the custom tool call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -7888,7 +9150,31 @@ Create items in a conversation with the given ID.
 
       The unique ID of the custom tool call output in the OpenAI platform.
 
-  - `CustomToolCall object { call_id, input, name, 3 more }`
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
+  - `CustomToolCall object { call_id, input, name, 4 more }`
 
     A call to a custom tool created by the model.
 
@@ -7914,6 +9200,26 @@ Create items in a conversation with the given ID.
 
       The unique ID of the custom tool call in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the custom tool being called.
@@ -7942,6 +9248,58 @@ Create items in a conversation with the given ID.
 
       - `"item_reference"`
 
+  - `Program object { id, call_id, code, 2 more }`
+
+    - `id: string`
+
+      The unique ID of this program item.
+
+    - `call_id: string`
+
+      The stable call ID of the program item.
+
+    - `code: string`
+
+      The JavaScript source executed by programmatic tool calling.
+
+    - `fingerprint: string`
+
+      Opaque program replay fingerprint that must be round-tripped.
+
+    - `type: "program"`
+
+      The item type. Always `program`.
+
+      - `"program"`
+
+  - `ProgramOutput object { id, call_id, result, 2 more }`
+
+    - `id: string`
+
+      The unique ID of this program output item.
+
+    - `call_id: string`
+
+      The call ID of the program item.
+
+    - `result: string`
+
+      The result produced by the program item.
+
+    - `status: "completed" or "incomplete"`
+
+      The terminal status of the program output.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+    - `type: "program_output"`
+
+      The item type. Always `program_output`.
+
+      - `"program_output"`
+
 ### Returns
 
 - `ConversationItemList object { data, first_id, has_more, 2 more }`
@@ -7964,7 +9322,7 @@ Create items in a conversation with the given ID.
 
         The content of the message
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -7978,7 +9336,17 @@ Create items in a conversation with the given ID.
 
             - `"input_text"`
 
-        - `ResponseOutputText object { annotations, logprobs, text, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseOutputText object { annotations, text, type, logprobs }`
 
           A text output from the model.
 
@@ -8082,15 +9450,17 @@ Create items in a conversation with the given ID.
 
                 - `"file_path"`
 
-          - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+          - `text: string`
 
-            - `token: string`
+            The text output from the model.
 
-            - `bytes: array of number`
+          - `type: "output_text"`
 
-            - `logprob: number`
+            The type of the output text. Always `output_text`.
 
-            - `top_logprobs: array of object { token, bytes, logprob }`
+            - `"output_text"`
+
+          - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
             - `token: string`
 
@@ -8098,15 +9468,13 @@ Create items in a conversation with the given ID.
 
             - `logprob: number`
 
-          - `text: string`
-
-            The text output from the model.
+            - `top_logprobs: array of object { token, bytes, logprob }`
 
-          - `type: "output_text"`
+              - `token: string`
 
-            The type of the output text. Always `output_text`.
+              - `bytes: array of number`
 
-            - `"output_text"`
+              - `logprob: number`
 
         - `TextContent object { text, type }`
 
@@ -8160,9 +9528,9 @@ Create items in a conversation with the given ID.
 
             - `"refusal"`
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
           - `detail: "low" or "high" or "auto" or "original"`
 
@@ -8190,7 +9558,17 @@ Create items in a conversation with the given ID.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
           A screenshot of a computer.
 
@@ -8220,7 +9598,17 @@ Create items in a conversation with the given ID.
 
             - `"computer_screenshot"`
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -8230,9 +9618,11 @@ Create items in a conversation with the given ID.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -8254,6 +9644,16 @@ Create items in a conversation with the given ID.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
       - `role: "unknown" or "user" or "assistant" or 5 more`
 
         The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -8298,7 +9698,7 @@ Create items in a conversation with the given ID.
 
         - `"final_answer"`
 
-    - `FunctionCall object { id, arguments, call_id, 5 more }`
+    - `FunctionCall object { id, arguments, call_id, 6 more }`
 
       - `id: string`
 
@@ -8333,6 +9733,26 @@ Create items in a conversation with the given ID.
 
         - `"function_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -8341,7 +9761,7 @@ Create items in a conversation with the given ID.
 
         The namespace of the function to run.
 
-    - `FunctionCallOutput object { id, call_id, output, 3 more }`
+    - `FunctionCallOutput object { id, call_id, output, 4 more }`
 
       - `id: string`
 
@@ -8364,15 +9784,15 @@ Create items in a conversation with the given ID.
 
           Text, image, or file output of the function call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -8393,6 +9813,30 @@ Create items in a conversation with the given ID.
 
         - `"function_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -8400,7 +9844,7 @@ Create items in a conversation with the given ID.
     - `FileSearchCall object { id, queries, status, 2 more }`
 
       The results of a file search tool call. See the
-      [file search guide](/docs/guides/tools-file-search) for more information.
+      [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
       - `id: string`
 
@@ -8468,7 +9912,7 @@ Create items in a conversation with the given ID.
     - `WebSearchCall object { id, action, status, type }`
 
       The results of a web search tool call. See the
-      [web search guide](/docs/guides/tools-web-search) for more information.
+      [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
       - `id: string`
 
@@ -8594,7 +10038,7 @@ Create items in a conversation with the given ID.
     - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
       A tool call to a computer use tool. See the
-      [computer use guide](/docs/guides/tools-computer-use) for more information.
+      [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
       - `id: string`
 
@@ -8637,7 +10081,7 @@ Create items in a conversation with the given ID.
 
         - `"computer_call"`
 
-      - `action: optional ComputerAction`
+      - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
         A click action.
 
@@ -8841,53 +10285,208 @@ Create items in a conversation with the given ID.
 
           A click action.
 
-        - `DoubleClick object { keys, type, x, y }`
+          - `button: "left" or "right" or "wheel" or 2 more`
 
-          A double click action.
+            Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
 
-        - `Drag object { path, type, keys }`
+            - `"left"`
 
-          A drag action.
+            - `"right"`
 
-        - `Keypress object { keys, type }`
+            - `"wheel"`
 
-          A collection of keypresses the model would like to perform.
+            - `"back"`
 
-        - `Move object { type, x, y, keys }`
+            - `"forward"`
 
-          A mouse move action.
+          - `type: "click"`
 
-        - `Screenshot object { type }`
+            Specifies the event type. For a click action, this property is always `click`.
 
-          A screenshot action.
+            - `"click"`
 
-        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+          - `x: number`
 
-          A scroll action.
+            The x-coordinate where the click occurred.
 
-        - `Type object { text, type }`
+          - `y: number`
 
-          An action to type in text.
+            The y-coordinate where the click occurred.
 
-        - `Wait object { type }`
+          - `keys: optional array of string`
 
-          A wait action.
+            The keys being held while clicking.
 
-    - `ComputerCallOutput object { id, call_id, output, 4 more }`
+        - `DoubleClick object { keys, type, x, y }`
 
-      - `id: string`
+          A double click action.
 
-        The unique ID of the computer call tool output.
+          - `keys: array of string`
 
-      - `call_id: string`
+            The keys being held while double-clicking.
 
-        The ID of the computer tool call that produced the output.
+          - `type: "double_click"`
 
-      - `output: ResponseComputerToolCallOutputScreenshot`
+            Specifies the event type. For a double click action, this property is always set to `double_click`.
 
-        A computer screenshot image used with the computer use tool.
+            - `"double_click"`
 
-        - `type: "computer_screenshot"`
+          - `x: number`
+
+            The x-coordinate where the double click occurred.
+
+          - `y: number`
+
+            The y-coordinate where the double click occurred.
+
+        - `Drag object { path, type, keys }`
+
+          A drag action.
+
+          - `path: array of object { x, y }`
+
+            An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
+
+            ```
+            [
+              { x: 100, y: 200 },
+              { x: 200, y: 300 }
+            ]
+            ```
+
+            - `x: number`
+
+              The x-coordinate.
+
+            - `y: number`
+
+              The y-coordinate.
+
+          - `type: "drag"`
+
+            Specifies the event type. For a drag action, this property is always set to `drag`.
+
+            - `"drag"`
+
+          - `keys: optional array of string`
+
+            The keys being held while dragging the mouse.
+
+        - `Keypress object { keys, type }`
+
+          A collection of keypresses the model would like to perform.
+
+          - `keys: array of string`
+
+            The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+          - `type: "keypress"`
+
+            Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+            - `"keypress"`
+
+        - `Move object { type, x, y, keys }`
+
+          A mouse move action.
+
+          - `type: "move"`
+
+            Specifies the event type. For a move action, this property is always set to `move`.
+
+            - `"move"`
+
+          - `x: number`
+
+            The x-coordinate to move to.
+
+          - `y: number`
+
+            The y-coordinate to move to.
+
+          - `keys: optional array of string`
+
+            The keys being held while moving the mouse.
+
+        - `Screenshot object { type }`
+
+          A screenshot action.
+
+          - `type: "screenshot"`
+
+            Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+            - `"screenshot"`
+
+        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+
+          A scroll action.
+
+          - `scroll_x: number`
+
+            The horizontal scroll distance.
+
+          - `scroll_y: number`
+
+            The vertical scroll distance.
+
+          - `type: "scroll"`
+
+            Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+            - `"scroll"`
+
+          - `x: number`
+
+            The x-coordinate where the scroll occurred.
+
+          - `y: number`
+
+            The y-coordinate where the scroll occurred.
+
+          - `keys: optional array of string`
+
+            The keys being held while scrolling.
+
+        - `Type object { text, type }`
+
+          An action to type in text.
+
+          - `text: string`
+
+            The text to type.
+
+          - `type: "type"`
+
+            Specifies the event type. For a type action, this property is always set to `type`.
+
+            - `"type"`
+
+        - `Wait object { type }`
+
+          A wait action.
+
+          - `type: "wait"`
+
+            Specifies the event type. For a wait action, this property is always set to `wait`.
+
+            - `"wait"`
+
+    - `ComputerCallOutput object { id, call_id, output, 4 more }`
+
+      - `id: string`
+
+        The unique ID of the computer call tool output.
+
+      - `call_id: string`
+
+        The ID of the computer tool call that produced the output.
+
+      - `output: ResponseComputerToolCallOutputScreenshot`
+
+        A computer screenshot image used with the computer use tool.
+
+        - `type: "computer_screenshot"`
 
           Specifies the event type. For a computer screenshot, this property is
           always set to `computer_screenshot`.
@@ -9012,11 +10611,11 @@ Create items in a conversation with the given ID.
 
         - `"incomplete"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The loaded tool definitions returned by tool search.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -9030,7 +10629,7 @@ Create items in a conversation with the given ID.
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -9038,6 +10637,14 @@ Create items in a conversation with the given ID.
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -9046,6 +10653,10 @@ Create items in a conversation with the given ID.
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -9216,7 +10827,7 @@ Create items in a conversation with the given ID.
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -9273,10 +10884,10 @@ Create items in a conversation with the given ID.
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -9288,6 +10899,14 @@ Create items in a conversation with the given ID.
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -9320,7 +10939,7 @@ Create items in a conversation with the given ID.
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -9420,7 +11039,7 @@ Create items in a conversation with the given ID.
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -9506,6 +11125,22 @@ Create items in a conversation with the given ID.
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -9528,8 +11163,19 @@ Create items in a conversation with the given ID.
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -9558,13 +11204,13 @@ Create items in a conversation with the given ID.
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -9572,8 +11218,14 @@ Create items in a conversation with the given ID.
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -9642,7 +11294,7 @@ Create items in a conversation with the given ID.
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -9652,6 +11304,14 @@ Create items in a conversation with the given ID.
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -9778,9 +11438,9 @@ Create items in a conversation with the given ID.
 
                 - `"container_reference"`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -9792,6 +11452,14 @@ Create items in a conversation with the given ID.
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -9848,11 +11516,11 @@ Create items in a conversation with the given ID.
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -9860,19 +11528,33 @@ Create items in a conversation with the given ID.
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -9884,6 +11566,14 @@ Create items in a conversation with the given ID.
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -9982,7 +11672,7 @@ Create items in a conversation with the given ID.
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -9992,6 +11682,14 @@ Create items in a conversation with the given ID.
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "tool_search_output"`
 
         The type of the item. Always `tool_search_output`.
@@ -10028,11 +11726,11 @@ Create items in a conversation with the given ID.
 
         - `"tool"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The additional tool definitions made available at this item.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -10046,7 +11744,7 @@ Create items in a conversation with the given ID.
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -10054,6 +11752,14 @@ Create items in a conversation with the given ID.
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -10062,6 +11768,10 @@ Create items in a conversation with the given ID.
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -10165,7 +11875,7 @@ Create items in a conversation with the given ID.
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -10222,10 +11932,10 @@ Create items in a conversation with the given ID.
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -10237,6 +11947,14 @@ Create items in a conversation with the given ID.
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -10269,7 +11987,7 @@ Create items in a conversation with the given ID.
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -10369,7 +12087,7 @@ Create items in a conversation with the given ID.
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -10423,6 +12141,22 @@ Create items in a conversation with the given ID.
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -10445,8 +12179,19 @@ Create items in a conversation with the given ID.
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -10475,13 +12220,13 @@ Create items in a conversation with the given ID.
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -10489,8 +12234,14 @@ Create items in a conversation with the given ID.
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -10559,7 +12310,7 @@ Create items in a conversation with the given ID.
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -10569,6 +12320,14 @@ Create items in a conversation with the given ID.
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -10577,9 +12336,9 @@ Create items in a conversation with the given ID.
 
             - `ContainerReference object { container_id, type }`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -10591,6 +12350,14 @@ Create items in a conversation with the given ID.
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -10615,11 +12382,11 @@ Create items in a conversation with the given ID.
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -10627,19 +12394,33 @@ Create items in a conversation with the given ID.
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -10651,6 +12432,14 @@ Create items in a conversation with the given ID.
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -10749,7 +12538,7 @@ Create items in a conversation with the given ID.
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -10759,6 +12548,14 @@ Create items in a conversation with the given ID.
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "additional_tools"`
 
         The type of the item. Always `additional_tools`.
@@ -10770,13 +12567,13 @@ Create items in a conversation with the given ID.
       A description of the chain of thought used by a reasoning model while generating
       a response. Be sure to include these items in your `input` to the Responses API
       for subsequent turns of a conversation if you are manually
-      [managing context](/docs/guides/conversation-state).
+      [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
       - `id: string`
 
         The unique identifier of the reasoning content.
 
-      - `summary: array of SummaryTextContent`
+      - `summary: array of object { text, type }`
 
         Reasoning summary content.
 
@@ -10788,6 +12585,8 @@ Create items in a conversation with the given ID.
 
           The type of the object. Always `summary_text`.
 
+          - `"summary_text"`
+
       - `type: "reasoning"`
 
         The type of the object. Always `reasoning`.
@@ -10824,17 +12623,69 @@ Create items in a conversation with the given ID.
 
         - `"incomplete"`
 
-    - `Compaction object { id, encrypted_content, type, created_by }`
-
-      A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+    - `Program object { id, call_id, code, 2 more }`
 
       - `id: string`
 
-        The unique ID of the compaction item.
+        The unique ID of the program item.
 
-      - `encrypted_content: string`
+      - `call_id: string`
 
-        The encrypted content that was produced by compaction.
+        The stable call ID of the program item.
+
+      - `code: string`
+
+        The JavaScript source executed by programmatic tool calling.
+
+      - `fingerprint: string`
+
+        Opaque program replay fingerprint that must be round-tripped.
+
+      - `type: "program"`
+
+        The type of the item. Always `program`.
+
+        - `"program"`
+
+    - `ProgramOutput object { id, call_id, result, 2 more }`
+
+      - `id: string`
+
+        The unique ID of the program output item.
+
+      - `call_id: string`
+
+        The call ID of the program item.
+
+      - `result: string`
+
+        The result produced by the program item.
+
+      - `status: "completed" or "incomplete"`
+
+        The terminal status of the program output item.
+
+        - `"completed"`
+
+        - `"incomplete"`
+
+      - `type: "program_output"`
+
+        The type of the item. Always `program_output`.
+
+        - `"program_output"`
+
+    - `Compaction object { id, encrypted_content, type, created_by }`
+
+      A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
+
+      - `id: string`
+
+        The unique ID of the compaction item.
+
+      - `encrypted_content: string`
+
+        The encrypted content that was produced by compaction.
 
       - `type: "compaction"`
 
@@ -11001,7 +12852,7 @@ Create items in a conversation with the given ID.
 
         - `"incomplete"`
 
-    - `ShellCall object { id, action, call_id, 4 more }`
+    - `ShellCall object { id, action, call_id, 5 more }`
 
       A tool call that executes one or more shell commands in a managed environment.
 
@@ -11069,11 +12920,31 @@ Create items in a conversation with the given ID.
 
         - `"shell_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ShellCallOutput object { id, call_id, max_output_length, 4 more }`
+    - `ShellCallOutput object { id, call_id, max_output_length, 5 more }`
 
       The output of a shell tool call that was emitted.
 
@@ -11149,11 +13020,31 @@ Create items in a conversation with the given ID.
 
         - `"shell_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
 
-    - `ApplyPatchCall object { id, call_id, operation, 3 more }`
+    - `ApplyPatchCall object { id, call_id, operation, 4 more }`
 
       A tool call that applies file diffs by creating, deleting, or updating files.
 
@@ -11233,11 +13124,31 @@ Create items in a conversation with the given ID.
 
         - `"apply_patch_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ApplyPatchCallOutput object { id, call_id, status, 3 more }`
+    - `ApplyPatchCallOutput object { id, call_id, status, 4 more }`
 
       The output emitted by an apply patch tool call.
 
@@ -11263,6 +13174,26 @@ Create items in a conversation with the given ID.
 
         - `"apply_patch_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call output.
@@ -11418,7 +13349,7 @@ Create items in a conversation with the given ID.
 
         - `"failed"`
 
-    - `CustomToolCall object { call_id, input, name, 3 more }`
+    - `CustomToolCall object { call_id, input, name, 4 more }`
 
       A call to a custom tool created by the model.
 
@@ -11444,11 +13375,31 @@ Create items in a conversation with the given ID.
 
         The unique ID of the custom tool call in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `namespace: optional string`
 
         The namespace of the custom tool being called.
 
-    - `CustomToolCallOutput object { call_id, output, type, id }`
+    - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
       The output of a custom tool call from your code, being sent back to the model.
 
@@ -11469,15 +13420,15 @@ Create items in a conversation with the given ID.
 
           Text, image, or file output of the custom tool call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -11491,6 +13442,30 @@ Create items in a conversation with the given ID.
 
         The unique ID of the custom tool call output in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
   - `first_id: string`
 
     The ID of the first item in the list.
@@ -11536,7 +13511,10 @@ curl https://api.openai.com/v1/conversations/$CONVERSATION_ID/items \
       "content": [
         {
           "text": "text",
-          "type": "input_text"
+          "type": "input_text",
+          "prompt_cache_breakpoint": {
+            "mode": "explicit"
+          }
         }
       ],
       "role": "unknown",
@@ -11613,7 +13591,7 @@ curl https://api.openai.com/v1/conversations/conv_123/items \
 
 **get** `/conversations/{conversation_id}/items`
 
-List all items for a conversation with the given ID.
+List items
 
 ### Path Parameters
 
@@ -11691,7 +13669,7 @@ List all items for a conversation with the given ID.
 
         The content of the message
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -11705,7 +13683,17 @@ List all items for a conversation with the given ID.
 
             - `"input_text"`
 
-        - `ResponseOutputText object { annotations, logprobs, text, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseOutputText object { annotations, text, type, logprobs }`
 
           A text output from the model.
 
@@ -11809,15 +13797,17 @@ List all items for a conversation with the given ID.
 
                 - `"file_path"`
 
-          - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+          - `text: string`
 
-            - `token: string`
+            The text output from the model.
 
-            - `bytes: array of number`
+          - `type: "output_text"`
 
-            - `logprob: number`
+            The type of the output text. Always `output_text`.
 
-            - `top_logprobs: array of object { token, bytes, logprob }`
+            - `"output_text"`
+
+          - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
             - `token: string`
 
@@ -11825,15 +13815,13 @@ List all items for a conversation with the given ID.
 
             - `logprob: number`
 
-          - `text: string`
-
-            The text output from the model.
+            - `top_logprobs: array of object { token, bytes, logprob }`
 
-          - `type: "output_text"`
+              - `token: string`
 
-            The type of the output text. Always `output_text`.
+              - `bytes: array of number`
 
-            - `"output_text"`
+              - `logprob: number`
 
         - `TextContent object { text, type }`
 
@@ -11887,9 +13875,9 @@ List all items for a conversation with the given ID.
 
             - `"refusal"`
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
           - `detail: "low" or "high" or "auto" or "original"`
 
@@ -11917,7 +13905,17 @@ List all items for a conversation with the given ID.
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
           A screenshot of a computer.
 
@@ -11947,7 +13945,17 @@ List all items for a conversation with the given ID.
 
             - `"computer_screenshot"`
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -11957,9 +13965,11 @@ List all items for a conversation with the given ID.
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -11981,6 +13991,16 @@ List all items for a conversation with the given ID.
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
       - `role: "unknown" or "user" or "assistant" or 5 more`
 
         The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -12025,7 +14045,7 @@ List all items for a conversation with the given ID.
 
         - `"final_answer"`
 
-    - `FunctionCall object { id, arguments, call_id, 5 more }`
+    - `FunctionCall object { id, arguments, call_id, 6 more }`
 
       - `id: string`
 
@@ -12060,6 +14080,26 @@ List all items for a conversation with the given ID.
 
         - `"function_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -12068,7 +14108,7 @@ List all items for a conversation with the given ID.
 
         The namespace of the function to run.
 
-    - `FunctionCallOutput object { id, call_id, output, 3 more }`
+    - `FunctionCallOutput object { id, call_id, output, 4 more }`
 
       - `id: string`
 
@@ -12091,15 +14131,15 @@ List all items for a conversation with the given ID.
 
           Text, image, or file output of the function call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -12120,6 +14160,30 @@ List all items for a conversation with the given ID.
 
         - `"function_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -12127,7 +14191,7 @@ List all items for a conversation with the given ID.
     - `FileSearchCall object { id, queries, status, 2 more }`
 
       The results of a file search tool call. See the
-      [file search guide](/docs/guides/tools-file-search) for more information.
+      [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
       - `id: string`
 
@@ -12195,7 +14259,7 @@ List all items for a conversation with the given ID.
     - `WebSearchCall object { id, action, status, type }`
 
       The results of a web search tool call. See the
-      [web search guide](/docs/guides/tools-web-search) for more information.
+      [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
       - `id: string`
 
@@ -12321,7 +14385,7 @@ List all items for a conversation with the given ID.
     - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
       A tool call to a computer use tool. See the
-      [computer use guide](/docs/guides/tools-computer-use) for more information.
+      [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
       - `id: string`
 
@@ -12364,7 +14428,7 @@ List all items for a conversation with the given ID.
 
         - `"computer_call"`
 
-      - `action: optional ComputerAction`
+      - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
         A click action.
 
@@ -12568,92 +14632,247 @@ List all items for a conversation with the given ID.
 
           A click action.
 
-        - `DoubleClick object { keys, type, x, y }`
+          - `button: "left" or "right" or "wheel" or 2 more`
 
-          A double click action.
+            Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
 
-        - `Drag object { path, type, keys }`
+            - `"left"`
 
-          A drag action.
+            - `"right"`
 
-        - `Keypress object { keys, type }`
+            - `"wheel"`
 
-          A collection of keypresses the model would like to perform.
+            - `"back"`
 
-        - `Move object { type, x, y, keys }`
+            - `"forward"`
 
-          A mouse move action.
+          - `type: "click"`
 
-        - `Screenshot object { type }`
+            Specifies the event type. For a click action, this property is always `click`.
 
-          A screenshot action.
+            - `"click"`
 
-        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+          - `x: number`
 
-          A scroll action.
+            The x-coordinate where the click occurred.
 
-        - `Type object { text, type }`
+          - `y: number`
 
-          An action to type in text.
+            The y-coordinate where the click occurred.
 
-        - `Wait object { type }`
+          - `keys: optional array of string`
 
-          A wait action.
+            The keys being held while clicking.
 
-    - `ComputerCallOutput object { id, call_id, output, 4 more }`
+        - `DoubleClick object { keys, type, x, y }`
 
-      - `id: string`
+          A double click action.
 
-        The unique ID of the computer call tool output.
+          - `keys: array of string`
 
-      - `call_id: string`
+            The keys being held while double-clicking.
 
-        The ID of the computer tool call that produced the output.
+          - `type: "double_click"`
 
-      - `output: ResponseComputerToolCallOutputScreenshot`
+            Specifies the event type. For a double click action, this property is always set to `double_click`.
 
-        A computer screenshot image used with the computer use tool.
+            - `"double_click"`
 
-        - `type: "computer_screenshot"`
+          - `x: number`
 
-          Specifies the event type. For a computer screenshot, this property is
-          always set to `computer_screenshot`.
+            The x-coordinate where the double click occurred.
 
-          - `"computer_screenshot"`
+          - `y: number`
 
-        - `file_id: optional string`
+            The y-coordinate where the double click occurred.
 
-          The identifier of an uploaded file that contains the screenshot.
+        - `Drag object { path, type, keys }`
 
-        - `image_url: optional string`
+          A drag action.
 
-          The URL of the screenshot image.
+          - `path: array of object { x, y }`
 
-      - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+            An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
 
-        The status of the message input. One of `in_progress`, `completed`, or
-        `incomplete`. Populated when input items are returned via API.
+            ```
+            [
+              { x: 100, y: 200 },
+              { x: 200, y: 300 }
+            ]
+            ```
 
-        - `"completed"`
+            - `x: number`
 
-        - `"incomplete"`
+              The x-coordinate.
 
-        - `"failed"`
+            - `y: number`
 
-        - `"in_progress"`
+              The y-coordinate.
 
-      - `type: "computer_call_output"`
+          - `type: "drag"`
 
-        The type of the computer tool call output. Always `computer_call_output`.
+            Specifies the event type. For a drag action, this property is always set to `drag`.
 
-        - `"computer_call_output"`
+            - `"drag"`
 
-      - `acknowledged_safety_checks: optional array of object { id, code, message }`
+          - `keys: optional array of string`
 
-        The safety checks reported by the API that have been acknowledged by the
-        developer.
+            The keys being held while dragging the mouse.
 
-        - `id: string`
+        - `Keypress object { keys, type }`
+
+          A collection of keypresses the model would like to perform.
+
+          - `keys: array of string`
+
+            The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+          - `type: "keypress"`
+
+            Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+            - `"keypress"`
+
+        - `Move object { type, x, y, keys }`
+
+          A mouse move action.
+
+          - `type: "move"`
+
+            Specifies the event type. For a move action, this property is always set to `move`.
+
+            - `"move"`
+
+          - `x: number`
+
+            The x-coordinate to move to.
+
+          - `y: number`
+
+            The y-coordinate to move to.
+
+          - `keys: optional array of string`
+
+            The keys being held while moving the mouse.
+
+        - `Screenshot object { type }`
+
+          A screenshot action.
+
+          - `type: "screenshot"`
+
+            Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+            - `"screenshot"`
+
+        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+
+          A scroll action.
+
+          - `scroll_x: number`
+
+            The horizontal scroll distance.
+
+          - `scroll_y: number`
+
+            The vertical scroll distance.
+
+          - `type: "scroll"`
+
+            Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+            - `"scroll"`
+
+          - `x: number`
+
+            The x-coordinate where the scroll occurred.
+
+          - `y: number`
+
+            The y-coordinate where the scroll occurred.
+
+          - `keys: optional array of string`
+
+            The keys being held while scrolling.
+
+        - `Type object { text, type }`
+
+          An action to type in text.
+
+          - `text: string`
+
+            The text to type.
+
+          - `type: "type"`
+
+            Specifies the event type. For a type action, this property is always set to `type`.
+
+            - `"type"`
+
+        - `Wait object { type }`
+
+          A wait action.
+
+          - `type: "wait"`
+
+            Specifies the event type. For a wait action, this property is always set to `wait`.
+
+            - `"wait"`
+
+    - `ComputerCallOutput object { id, call_id, output, 4 more }`
+
+      - `id: string`
+
+        The unique ID of the computer call tool output.
+
+      - `call_id: string`
+
+        The ID of the computer tool call that produced the output.
+
+      - `output: ResponseComputerToolCallOutputScreenshot`
+
+        A computer screenshot image used with the computer use tool.
+
+        - `type: "computer_screenshot"`
+
+          Specifies the event type. For a computer screenshot, this property is
+          always set to `computer_screenshot`.
+
+          - `"computer_screenshot"`
+
+        - `file_id: optional string`
+
+          The identifier of an uploaded file that contains the screenshot.
+
+        - `image_url: optional string`
+
+          The URL of the screenshot image.
+
+      - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+
+        The status of the message input. One of `in_progress`, `completed`, or
+        `incomplete`. Populated when input items are returned via API.
+
+        - `"completed"`
+
+        - `"incomplete"`
+
+        - `"failed"`
+
+        - `"in_progress"`
+
+      - `type: "computer_call_output"`
+
+        The type of the computer tool call output. Always `computer_call_output`.
+
+        - `"computer_call_output"`
+
+      - `acknowledged_safety_checks: optional array of object { id, code, message }`
+
+        The safety checks reported by the API that have been acknowledged by the
+        developer.
+
+        - `id: string`
 
           The ID of the pending safety check.
 
@@ -12739,11 +14958,11 @@ List all items for a conversation with the given ID.
 
         - `"incomplete"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The loaded tool definitions returned by tool search.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -12757,7 +14976,7 @@ List all items for a conversation with the given ID.
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -12765,6 +14984,14 @@ List all items for a conversation with the given ID.
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -12773,6 +15000,10 @@ List all items for a conversation with the given ID.
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -12943,7 +15174,7 @@ List all items for a conversation with the given ID.
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -13000,10 +15231,10 @@ List all items for a conversation with the given ID.
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -13015,6 +15246,14 @@ List all items for a conversation with the given ID.
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -13047,7 +15286,7 @@ List all items for a conversation with the given ID.
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -13147,7 +15386,7 @@ List all items for a conversation with the given ID.
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -13233,6 +15472,22 @@ List all items for a conversation with the given ID.
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -13255,8 +15510,19 @@ List all items for a conversation with the given ID.
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -13285,13 +15551,13 @@ List all items for a conversation with the given ID.
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -13299,8 +15565,14 @@ List all items for a conversation with the given ID.
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -13369,7 +15641,7 @@ List all items for a conversation with the given ID.
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -13379,6 +15651,14 @@ List all items for a conversation with the given ID.
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -13505,9 +15785,9 @@ List all items for a conversation with the given ID.
 
                 - `"container_reference"`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -13519,6 +15799,14 @@ List all items for a conversation with the given ID.
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -13575,11 +15863,11 @@ List all items for a conversation with the given ID.
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -13587,19 +15875,33 @@ List all items for a conversation with the given ID.
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -13611,6 +15913,14 @@ List all items for a conversation with the given ID.
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -13709,7 +16019,7 @@ List all items for a conversation with the given ID.
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -13719,6 +16029,14 @@ List all items for a conversation with the given ID.
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "tool_search_output"`
 
         The type of the item. Always `tool_search_output`.
@@ -13755,11 +16073,11 @@ List all items for a conversation with the given ID.
 
         - `"tool"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The additional tool definitions made available at this item.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -13773,7 +16091,7 @@ List all items for a conversation with the given ID.
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -13781,6 +16099,14 @@ List all items for a conversation with the given ID.
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -13789,6 +16115,10 @@ List all items for a conversation with the given ID.
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -13892,7 +16222,7 @@ List all items for a conversation with the given ID.
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -13949,10 +16279,10 @@ List all items for a conversation with the given ID.
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -13964,6 +16294,14 @@ List all items for a conversation with the given ID.
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -13996,7 +16334,7 @@ List all items for a conversation with the given ID.
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -14096,7 +16434,7 @@ List all items for a conversation with the given ID.
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -14150,6 +16488,22 @@ List all items for a conversation with the given ID.
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -14172,8 +16526,19 @@ List all items for a conversation with the given ID.
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -14202,13 +16567,13 @@ List all items for a conversation with the given ID.
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -14216,8 +16581,14 @@ List all items for a conversation with the given ID.
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -14286,7 +16657,7 @@ List all items for a conversation with the given ID.
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -14296,6 +16667,14 @@ List all items for a conversation with the given ID.
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -14304,9 +16683,9 @@ List all items for a conversation with the given ID.
 
             - `ContainerReference object { container_id, type }`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -14318,6 +16697,14 @@ List all items for a conversation with the given ID.
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -14342,11 +16729,11 @@ List all items for a conversation with the given ID.
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -14354,19 +16741,33 @@ List all items for a conversation with the given ID.
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -14378,6 +16779,14 @@ List all items for a conversation with the given ID.
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -14476,7 +16885,7 @@ List all items for a conversation with the given ID.
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -14486,6 +16895,14 @@ List all items for a conversation with the given ID.
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "additional_tools"`
 
         The type of the item. Always `additional_tools`.
@@ -14497,13 +16914,13 @@ List all items for a conversation with the given ID.
       A description of the chain of thought used by a reasoning model while generating
       a response. Be sure to include these items in your `input` to the Responses API
       for subsequent turns of a conversation if you are manually
-      [managing context](/docs/guides/conversation-state).
+      [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
       - `id: string`
 
         The unique identifier of the reasoning content.
 
-      - `summary: array of SummaryTextContent`
+      - `summary: array of object { text, type }`
 
         Reasoning summary content.
 
@@ -14515,6 +16932,8 @@ List all items for a conversation with the given ID.
 
           The type of the object. Always `summary_text`.
 
+          - `"summary_text"`
+
       - `type: "reasoning"`
 
         The type of the object. Always `reasoning`.
@@ -14551,19 +16970,71 @@ List all items for a conversation with the given ID.
 
         - `"incomplete"`
 
-    - `Compaction object { id, encrypted_content, type, created_by }`
-
-      A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+    - `Program object { id, call_id, code, 2 more }`
 
       - `id: string`
 
-        The unique ID of the compaction item.
+        The unique ID of the program item.
 
-      - `encrypted_content: string`
+      - `call_id: string`
 
-        The encrypted content that was produced by compaction.
+        The stable call ID of the program item.
 
-      - `type: "compaction"`
+      - `code: string`
+
+        The JavaScript source executed by programmatic tool calling.
+
+      - `fingerprint: string`
+
+        Opaque program replay fingerprint that must be round-tripped.
+
+      - `type: "program"`
+
+        The type of the item. Always `program`.
+
+        - `"program"`
+
+    - `ProgramOutput object { id, call_id, result, 2 more }`
+
+      - `id: string`
+
+        The unique ID of the program output item.
+
+      - `call_id: string`
+
+        The call ID of the program item.
+
+      - `result: string`
+
+        The result produced by the program item.
+
+      - `status: "completed" or "incomplete"`
+
+        The terminal status of the program output item.
+
+        - `"completed"`
+
+        - `"incomplete"`
+
+      - `type: "program_output"`
+
+        The type of the item. Always `program_output`.
+
+        - `"program_output"`
+
+    - `Compaction object { id, encrypted_content, type, created_by }`
+
+      A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
+
+      - `id: string`
+
+        The unique ID of the compaction item.
+
+      - `encrypted_content: string`
+
+        The encrypted content that was produced by compaction.
+
+      - `type: "compaction"`
 
         The type of the item. Always `compaction`.
 
@@ -14728,7 +17199,7 @@ List all items for a conversation with the given ID.
 
         - `"incomplete"`
 
-    - `ShellCall object { id, action, call_id, 4 more }`
+    - `ShellCall object { id, action, call_id, 5 more }`
 
       A tool call that executes one or more shell commands in a managed environment.
 
@@ -14796,11 +17267,31 @@ List all items for a conversation with the given ID.
 
         - `"shell_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ShellCallOutput object { id, call_id, max_output_length, 4 more }`
+    - `ShellCallOutput object { id, call_id, max_output_length, 5 more }`
 
       The output of a shell tool call that was emitted.
 
@@ -14876,11 +17367,31 @@ List all items for a conversation with the given ID.
 
         - `"shell_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
 
-    - `ApplyPatchCall object { id, call_id, operation, 3 more }`
+    - `ApplyPatchCall object { id, call_id, operation, 4 more }`
 
       A tool call that applies file diffs by creating, deleting, or updating files.
 
@@ -14960,11 +17471,31 @@ List all items for a conversation with the given ID.
 
         - `"apply_patch_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ApplyPatchCallOutput object { id, call_id, status, 3 more }`
+    - `ApplyPatchCallOutput object { id, call_id, status, 4 more }`
 
       The output emitted by an apply patch tool call.
 
@@ -14990,6 +17521,26 @@ List all items for a conversation with the given ID.
 
         - `"apply_patch_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call output.
@@ -15145,7 +17696,7 @@ List all items for a conversation with the given ID.
 
         - `"failed"`
 
-    - `CustomToolCall object { call_id, input, name, 3 more }`
+    - `CustomToolCall object { call_id, input, name, 4 more }`
 
       A call to a custom tool created by the model.
 
@@ -15171,11 +17722,31 @@ List all items for a conversation with the given ID.
 
         The unique ID of the custom tool call in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `namespace: optional string`
 
         The namespace of the custom tool being called.
 
-    - `CustomToolCallOutput object { call_id, output, type, id }`
+    - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
       The output of a custom tool call from your code, being sent back to the model.
 
@@ -15196,15 +17767,15 @@ List all items for a conversation with the given ID.
 
           Text, image, or file output of the custom tool call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -15218,6 +17789,30 @@ List all items for a conversation with the given ID.
 
         The unique ID of the custom tool call output in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
   - `first_id: string`
 
     The ID of the first item in the list.
@@ -15253,7 +17848,10 @@ curl https://api.openai.com/v1/conversations/$CONVERSATION_ID/items \
       "content": [
         {
           "text": "text",
-          "type": "input_text"
+          "type": "input_text",
+          "prompt_cache_breakpoint": {
+            "mode": "explicit"
+          }
         }
       ],
       "role": "unknown",
@@ -15302,7 +17900,7 @@ curl "https://api.openai.com/v1/conversations/conv_123/items?limit=10" \
 
 **get** `/conversations/{conversation_id}/items/{item_id}`
 
-Get a single item from a conversation with the given IDs.
+Retrieve an item
 
 ### Path Parameters
 
@@ -15315,7 +17913,7 @@ Get a single item from a conversation with the given IDs.
 - `include: optional array of ResponseIncludable`
 
   Additional fields to include in the response. See the `include`
-  parameter for [listing Conversation items above](/docs/api-reference/conversations/list-items#conversations_list_items-include) for more information.
+  parameter for [listing Conversation items above](https://platform.openai.com/docs/api-reference/conversations/list-items#conversations_list_items-include) for more information.
 
   - `"file_search_call.results"`
 
@@ -15335,9 +17933,9 @@ Get a single item from a conversation with the given IDs.
 
 ### Returns
 
-- `ConversationItem = Message or object { id, arguments, call_id, 5 more }  or object { id, call_id, output, 3 more }  or 23 more`
+- `ConversationItem = Message or object { id, arguments, call_id, 6 more }  or object { id, call_id, output, 4 more }  or 25 more`
 
-  A single item within a conversation. The set of possible types are the same as the `output` type of a [Response object](/docs/api-reference/responses/object#responses/object-output).
+  A single item within a conversation. The set of possible types are the same as the `output` type of a [Response object](https://platform.openai.com/docs/api-reference/responses/object#responses/object-output).
 
   - `Message object { id, content, role, 3 more }`
 
@@ -15351,7 +17949,7 @@ Get a single item from a conversation with the given IDs.
 
       The content of the message
 
-      - `ResponseInputText object { text, type }`
+      - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
         A text input to the model.
 
@@ -15365,7 +17963,17 @@ Get a single item from a conversation with the given IDs.
 
           - `"input_text"`
 
-      - `ResponseOutputText object { annotations, logprobs, text, type }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ResponseOutputText object { annotations, text, type, logprobs }`
 
         A text output from the model.
 
@@ -15469,15 +18077,17 @@ Get a single item from a conversation with the given IDs.
 
               - `"file_path"`
 
-        - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+        - `text: string`
 
-          - `token: string`
+          The text output from the model.
 
-          - `bytes: array of number`
+        - `type: "output_text"`
 
-          - `logprob: number`
+          The type of the output text. Always `output_text`.
 
-          - `top_logprobs: array of object { token, bytes, logprob }`
+          - `"output_text"`
+
+        - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
           - `token: string`
 
@@ -15485,15 +18095,13 @@ Get a single item from a conversation with the given IDs.
 
           - `logprob: number`
 
-        - `text: string`
-
-          The text output from the model.
+          - `top_logprobs: array of object { token, bytes, logprob }`
 
-        - `type: "output_text"`
+            - `token: string`
 
-          The type of the output text. Always `output_text`.
+            - `bytes: array of number`
 
-          - `"output_text"`
+            - `logprob: number`
 
       - `TextContent object { text, type }`
 
@@ -15547,9 +18155,9 @@ Get a single item from a conversation with the given IDs.
 
           - `"refusal"`
 
-      - `ResponseInputImage object { detail, type, file_id, image_url }`
+      - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-        An image input to the model. Learn about [image inputs](/docs/guides/vision).
+        An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
         - `detail: "low" or "high" or "auto" or "original"`
 
@@ -15577,7 +18185,17 @@ Get a single item from a conversation with the given IDs.
 
           The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-      - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
         A screenshot of a computer.
 
@@ -15607,7 +18225,17 @@ Get a single item from a conversation with the given IDs.
 
           - `"computer_screenshot"`
 
-      - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
         A file input to the model.
 
@@ -15617,9 +18245,11 @@ Get a single item from a conversation with the given IDs.
 
           - `"input_file"`
 
-        - `detail: optional "low" or "high"`
+        - `detail: optional "auto" or "low" or "high"`
 
-          The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+          The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+          - `"auto"`
 
           - `"low"`
 
@@ -15641,6 +18271,16 @@ Get a single item from a conversation with the given IDs.
 
           The name of the file to be sent to the model.
 
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
     - `role: "unknown" or "user" or "assistant" or 5 more`
 
       The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -15685,7 +18325,7 @@ Get a single item from a conversation with the given IDs.
 
       - `"final_answer"`
 
-  - `FunctionCall object { id, arguments, call_id, 5 more }`
+  - `FunctionCall object { id, arguments, call_id, 6 more }`
 
     - `id: string`
 
@@ -15720,6 +18360,26 @@ Get a single item from a conversation with the given IDs.
 
       - `"function_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
@@ -15728,7 +18388,7 @@ Get a single item from a conversation with the given IDs.
 
       The namespace of the function to run.
 
-  - `FunctionCallOutput object { id, call_id, output, 3 more }`
+  - `FunctionCallOutput object { id, call_id, output, 4 more }`
 
     - `id: string`
 
@@ -15751,15 +18411,15 @@ Get a single item from a conversation with the given IDs.
 
         Text, image, or file output of the function call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -15780,6 +18440,30 @@ Get a single item from a conversation with the given IDs.
 
       - `"function_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
@@ -15787,7 +18471,7 @@ Get a single item from a conversation with the given IDs.
   - `FileSearchCall object { id, queries, status, 2 more }`
 
     The results of a file search tool call. See the
-    [file search guide](/docs/guides/tools-file-search) for more information.
+    [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
     - `id: string`
 
@@ -15855,7 +18539,7 @@ Get a single item from a conversation with the given IDs.
   - `WebSearchCall object { id, action, status, type }`
 
     The results of a web search tool call. See the
-    [web search guide](/docs/guides/tools-web-search) for more information.
+    [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
     - `id: string`
 
@@ -15981,7 +18665,7 @@ Get a single item from a conversation with the given IDs.
   - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
     A tool call to a computer use tool. See the
-    [computer use guide](/docs/guides/tools-computer-use) for more information.
+    [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
     - `id: string`
 
@@ -16024,7 +18708,7 @@ Get a single item from a conversation with the given IDs.
 
       - `"computer_call"`
 
-    - `action: optional ComputerAction`
+    - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
       A click action.
 
@@ -16228,92 +18912,247 @@ Get a single item from a conversation with the given IDs.
 
         A click action.
 
-      - `DoubleClick object { keys, type, x, y }`
+        - `button: "left" or "right" or "wheel" or 2 more`
 
-        A double click action.
+          Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
 
-      - `Drag object { path, type, keys }`
+          - `"left"`
 
-        A drag action.
+          - `"right"`
 
-      - `Keypress object { keys, type }`
+          - `"wheel"`
 
-        A collection of keypresses the model would like to perform.
+          - `"back"`
 
-      - `Move object { type, x, y, keys }`
+          - `"forward"`
 
-        A mouse move action.
+        - `type: "click"`
 
-      - `Screenshot object { type }`
+          Specifies the event type. For a click action, this property is always `click`.
 
-        A screenshot action.
+          - `"click"`
 
-      - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+        - `x: number`
 
-        A scroll action.
+          The x-coordinate where the click occurred.
 
-      - `Type object { text, type }`
+        - `y: number`
 
-        An action to type in text.
+          The y-coordinate where the click occurred.
 
-      - `Wait object { type }`
+        - `keys: optional array of string`
 
-        A wait action.
+          The keys being held while clicking.
 
-  - `ComputerCallOutput object { id, call_id, output, 4 more }`
+      - `DoubleClick object { keys, type, x, y }`
 
-    - `id: string`
+        A double click action.
 
-      The unique ID of the computer call tool output.
+        - `keys: array of string`
 
-    - `call_id: string`
+          The keys being held while double-clicking.
 
-      The ID of the computer tool call that produced the output.
+        - `type: "double_click"`
 
-    - `output: ResponseComputerToolCallOutputScreenshot`
+          Specifies the event type. For a double click action, this property is always set to `double_click`.
 
-      A computer screenshot image used with the computer use tool.
+          - `"double_click"`
 
-      - `type: "computer_screenshot"`
+        - `x: number`
 
-        Specifies the event type. For a computer screenshot, this property is
-        always set to `computer_screenshot`.
+          The x-coordinate where the double click occurred.
 
-        - `"computer_screenshot"`
+        - `y: number`
 
-      - `file_id: optional string`
+          The y-coordinate where the double click occurred.
 
-        The identifier of an uploaded file that contains the screenshot.
+      - `Drag object { path, type, keys }`
 
-      - `image_url: optional string`
+        A drag action.
 
-        The URL of the screenshot image.
+        - `path: array of object { x, y }`
 
-    - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+          An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
 
-      The status of the message input. One of `in_progress`, `completed`, or
-      `incomplete`. Populated when input items are returned via API.
+          ```
+          [
+            { x: 100, y: 200 },
+            { x: 200, y: 300 }
+          ]
+          ```
 
-      - `"completed"`
+          - `x: number`
 
-      - `"incomplete"`
+            The x-coordinate.
 
-      - `"failed"`
+          - `y: number`
 
-      - `"in_progress"`
+            The y-coordinate.
 
-    - `type: "computer_call_output"`
+        - `type: "drag"`
 
-      The type of the computer tool call output. Always `computer_call_output`.
+          Specifies the event type. For a drag action, this property is always set to `drag`.
 
-      - `"computer_call_output"`
+          - `"drag"`
 
-    - `acknowledged_safety_checks: optional array of object { id, code, message }`
+        - `keys: optional array of string`
 
-      The safety checks reported by the API that have been acknowledged by the
-      developer.
+          The keys being held while dragging the mouse.
 
-      - `id: string`
+      - `Keypress object { keys, type }`
+
+        A collection of keypresses the model would like to perform.
+
+        - `keys: array of string`
+
+          The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+        - `type: "keypress"`
+
+          Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+          - `"keypress"`
+
+      - `Move object { type, x, y, keys }`
+
+        A mouse move action.
+
+        - `type: "move"`
+
+          Specifies the event type. For a move action, this property is always set to `move`.
+
+          - `"move"`
+
+        - `x: number`
+
+          The x-coordinate to move to.
+
+        - `y: number`
+
+          The y-coordinate to move to.
+
+        - `keys: optional array of string`
+
+          The keys being held while moving the mouse.
+
+      - `Screenshot object { type }`
+
+        A screenshot action.
+
+        - `type: "screenshot"`
+
+          Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+          - `"screenshot"`
+
+      - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+
+        A scroll action.
+
+        - `scroll_x: number`
+
+          The horizontal scroll distance.
+
+        - `scroll_y: number`
+
+          The vertical scroll distance.
+
+        - `type: "scroll"`
+
+          Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+          - `"scroll"`
+
+        - `x: number`
+
+          The x-coordinate where the scroll occurred.
+
+        - `y: number`
+
+          The y-coordinate where the scroll occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while scrolling.
+
+      - `Type object { text, type }`
+
+        An action to type in text.
+
+        - `text: string`
+
+          The text to type.
+
+        - `type: "type"`
+
+          Specifies the event type. For a type action, this property is always set to `type`.
+
+          - `"type"`
+
+      - `Wait object { type }`
+
+        A wait action.
+
+        - `type: "wait"`
+
+          Specifies the event type. For a wait action, this property is always set to `wait`.
+
+          - `"wait"`
+
+  - `ComputerCallOutput object { id, call_id, output, 4 more }`
+
+    - `id: string`
+
+      The unique ID of the computer call tool output.
+
+    - `call_id: string`
+
+      The ID of the computer tool call that produced the output.
+
+    - `output: ResponseComputerToolCallOutputScreenshot`
+
+      A computer screenshot image used with the computer use tool.
+
+      - `type: "computer_screenshot"`
+
+        Specifies the event type. For a computer screenshot, this property is
+        always set to `computer_screenshot`.
+
+        - `"computer_screenshot"`
+
+      - `file_id: optional string`
+
+        The identifier of an uploaded file that contains the screenshot.
+
+      - `image_url: optional string`
+
+        The URL of the screenshot image.
+
+    - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+
+      The status of the message input. One of `in_progress`, `completed`, or
+      `incomplete`. Populated when input items are returned via API.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+      - `"failed"`
+
+      - `"in_progress"`
+
+    - `type: "computer_call_output"`
+
+      The type of the computer tool call output. Always `computer_call_output`.
+
+      - `"computer_call_output"`
+
+    - `acknowledged_safety_checks: optional array of object { id, code, message }`
+
+      The safety checks reported by the API that have been acknowledged by the
+      developer.
+
+      - `id: string`
 
         The ID of the pending safety check.
 
@@ -16399,11 +19238,11 @@ Get a single item from a conversation with the given IDs.
 
       - `"incomplete"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The loaded tool definitions returned by tool search.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -16417,7 +19256,7 @@ Get a single item from a conversation with the given IDs.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -16425,6 +19264,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -16433,6 +19280,10 @@ Get a single item from a conversation with the given IDs.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -16603,7 +19454,7 @@ Get a single item from a conversation with the given IDs.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -16660,10 +19511,10 @@ Get a single item from a conversation with the given IDs.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -16675,6 +19526,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -16707,7 +19566,7 @@ Get a single item from a conversation with the given IDs.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -16807,7 +19666,7 @@ Get a single item from a conversation with the given IDs.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -16893,6 +19752,22 @@ Get a single item from a conversation with the given IDs.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -16915,8 +19790,19 @@ Get a single item from a conversation with the given IDs.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -16945,13 +19831,13 @@ Get a single item from a conversation with the given IDs.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -16959,8 +19845,14 @@ Get a single item from a conversation with the given IDs.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -17029,7 +19921,7 @@ Get a single item from a conversation with the given IDs.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -17039,6 +19931,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -17165,9 +20065,9 @@ Get a single item from a conversation with the given IDs.
 
               - `"container_reference"`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -17179,6 +20079,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -17235,11 +20143,11 @@ Get a single item from a conversation with the given IDs.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -17247,19 +20155,33 @@ Get a single item from a conversation with the given IDs.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+          - `Custom object { name, type, allowed_callers, 3 more }`
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -17271,6 +20193,14 @@ Get a single item from a conversation with the given IDs.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -17369,7 +20299,7 @@ Get a single item from a conversation with the given IDs.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -17379,6 +20309,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "tool_search_output"`
 
       The type of the item. Always `tool_search_output`.
@@ -17415,11 +20353,11 @@ Get a single item from a conversation with the given IDs.
 
       - `"tool"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The additional tool definitions made available at this item.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -17433,7 +20371,7 @@ Get a single item from a conversation with the given IDs.
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -17441,6 +20379,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -17449,6 +20395,10 @@ Get a single item from a conversation with the given IDs.
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -17552,7 +20502,7 @@ Get a single item from a conversation with the given IDs.
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -17609,10 +20559,10 @@ Get a single item from a conversation with the given IDs.
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -17624,6 +20574,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -17656,7 +20614,7 @@ Get a single item from a conversation with the given IDs.
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -17756,7 +20714,7 @@ Get a single item from a conversation with the given IDs.
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -17810,6 +20768,22 @@ Get a single item from a conversation with the given IDs.
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -17832,8 +20806,19 @@ Get a single item from a conversation with the given IDs.
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -17862,13 +20847,13 @@ Get a single item from a conversation with the given IDs.
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -17876,8 +20861,14 @@ Get a single item from a conversation with the given IDs.
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -17946,7 +20937,7 @@ Get a single item from a conversation with the given IDs.
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -17956,6 +20947,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -17964,9 +20963,9 @@ Get a single item from a conversation with the given IDs.
 
           - `ContainerReference object { container_id, type }`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -17978,6 +20977,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -18002,11 +21009,11 @@ Get a single item from a conversation with the given IDs.
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -18014,19 +21021,33 @@ Get a single item from a conversation with the given IDs.
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+          - `Custom object { name, type, allowed_callers, 3 more }`
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -18038,6 +21059,14 @@ Get a single item from a conversation with the given IDs.
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -18136,7 +21165,7 @@ Get a single item from a conversation with the given IDs.
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -18146,6 +21175,14 @@ Get a single item from a conversation with the given IDs.
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "additional_tools"`
 
       The type of the item. Always `additional_tools`.
@@ -18157,13 +21194,13 @@ Get a single item from a conversation with the given IDs.
     A description of the chain of thought used by a reasoning model while generating
     a response. Be sure to include these items in your `input` to the Responses API
     for subsequent turns of a conversation if you are manually
-    [managing context](/docs/guides/conversation-state).
+    [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
     - `id: string`
 
       The unique identifier of the reasoning content.
 
-    - `summary: array of SummaryTextContent`
+    - `summary: array of object { text, type }`
 
       Reasoning summary content.
 
@@ -18175,6 +21212,8 @@ Get a single item from a conversation with the given IDs.
 
         The type of the object. Always `summary_text`.
 
+        - `"summary_text"`
+
     - `type: "reasoning"`
 
       The type of the object. Always `reasoning`.
@@ -18211,19 +21250,71 @@ Get a single item from a conversation with the given IDs.
 
       - `"incomplete"`
 
-  - `Compaction object { id, encrypted_content, type, created_by }`
-
-    A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+  - `Program object { id, call_id, code, 2 more }`
 
     - `id: string`
 
-      The unique ID of the compaction item.
+      The unique ID of the program item.
 
-    - `encrypted_content: string`
+    - `call_id: string`
 
-      The encrypted content that was produced by compaction.
+      The stable call ID of the program item.
 
-    - `type: "compaction"`
+    - `code: string`
+
+      The JavaScript source executed by programmatic tool calling.
+
+    - `fingerprint: string`
+
+      Opaque program replay fingerprint that must be round-tripped.
+
+    - `type: "program"`
+
+      The type of the item. Always `program`.
+
+      - `"program"`
+
+  - `ProgramOutput object { id, call_id, result, 2 more }`
+
+    - `id: string`
+
+      The unique ID of the program output item.
+
+    - `call_id: string`
+
+      The call ID of the program item.
+
+    - `result: string`
+
+      The result produced by the program item.
+
+    - `status: "completed" or "incomplete"`
+
+      The terminal status of the program output item.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+    - `type: "program_output"`
+
+      The type of the item. Always `program_output`.
+
+      - `"program_output"`
+
+  - `Compaction object { id, encrypted_content, type, created_by }`
+
+    A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
+
+    - `id: string`
+
+      The unique ID of the compaction item.
+
+    - `encrypted_content: string`
+
+      The encrypted content that was produced by compaction.
+
+    - `type: "compaction"`
 
       The type of the item. Always `compaction`.
 
@@ -18388,7 +21479,7 @@ Get a single item from a conversation with the given IDs.
 
       - `"incomplete"`
 
-  - `ShellCall object { id, action, call_id, 4 more }`
+  - `ShellCall object { id, action, call_id, 5 more }`
 
     A tool call that executes one or more shell commands in a managed environment.
 
@@ -18456,11 +21547,31 @@ Get a single item from a conversation with the given IDs.
 
       - `"shell_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call.
 
-  - `ShellCallOutput object { id, call_id, max_output_length, 4 more }`
+  - `ShellCallOutput object { id, call_id, max_output_length, 5 more }`
 
     The output of a shell tool call that was emitted.
 
@@ -18536,11 +21647,31 @@ Get a single item from a conversation with the given IDs.
 
       - `"shell_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
 
-  - `ApplyPatchCall object { id, call_id, operation, 3 more }`
+  - `ApplyPatchCall object { id, call_id, operation, 4 more }`
 
     A tool call that applies file diffs by creating, deleting, or updating files.
 
@@ -18620,11 +21751,31 @@ Get a single item from a conversation with the given IDs.
 
       - `"apply_patch_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call.
 
-  - `ApplyPatchCallOutput object { id, call_id, status, 3 more }`
+  - `ApplyPatchCallOutput object { id, call_id, status, 4 more }`
 
     The output emitted by an apply patch tool call.
 
@@ -18650,6 +21801,26 @@ Get a single item from a conversation with the given IDs.
 
       - `"apply_patch_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call output.
@@ -18805,7 +21976,7 @@ Get a single item from a conversation with the given IDs.
 
       - `"failed"`
 
-  - `CustomToolCall object { call_id, input, name, 3 more }`
+  - `CustomToolCall object { call_id, input, name, 4 more }`
 
     A call to a custom tool created by the model.
 
@@ -18831,11 +22002,31 @@ Get a single item from a conversation with the given IDs.
 
       The unique ID of the custom tool call in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the custom tool being called.
 
-  - `CustomToolCallOutput object { call_id, output, type, id }`
+  - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
     The output of a custom tool call from your code, being sent back to the model.
 
@@ -18856,15 +22047,15 @@ Get a single item from a conversation with the given IDs.
 
         Text, image, or file output of the custom tool call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -18878,6 +22069,30 @@ Get a single item from a conversation with the given IDs.
 
       The unique ID of the custom tool call output in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
 ### Example
 
 ```http
@@ -18893,7 +22108,10 @@ curl https://api.openai.com/v1/conversations/$CONVERSATION_ID/items/$ITEM_ID \
   "content": [
     {
       "text": "text",
-      "type": "input_text"
+      "type": "input_text",
+      "prompt_cache_breakpoint": {
+        "mode": "explicit"
+      }
     }
   ],
   "role": "unknown",
@@ -18928,7 +22146,7 @@ curl https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
 **delete** `/conversations/{conversation_id}/items/{item_id}`
 
-Delete an item from a conversation with the given IDs.
+Delete an item
 
 ### Path Parameters
 
@@ -19000,9 +22218,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
 ### Conversation Item
 
-- `ConversationItem = Message or object { id, arguments, call_id, 5 more }  or object { id, call_id, output, 3 more }  or 23 more`
+- `ConversationItem = Message or object { id, arguments, call_id, 6 more }  or object { id, call_id, output, 4 more }  or 25 more`
 
-  A single item within a conversation. The set of possible types are the same as the `output` type of a [Response object](/docs/api-reference/responses/object#responses/object-output).
+  A single item within a conversation. The set of possible types are the same as the `output` type of a [Response object](https://platform.openai.com/docs/api-reference/responses/object#responses/object-output).
 
   - `Message object { id, content, role, 3 more }`
 
@@ -19016,7 +22234,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       The content of the message
 
-      - `ResponseInputText object { text, type }`
+      - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
         A text input to the model.
 
@@ -19030,7 +22248,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"input_text"`
 
-      - `ResponseOutputText object { annotations, logprobs, text, type }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ResponseOutputText object { annotations, text, type, logprobs }`
 
         A text output from the model.
 
@@ -19134,15 +22362,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"file_path"`
 
-        - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+        - `text: string`
 
-          - `token: string`
+          The text output from the model.
 
-          - `bytes: array of number`
+        - `type: "output_text"`
 
-          - `logprob: number`
+          The type of the output text. Always `output_text`.
 
-          - `top_logprobs: array of object { token, bytes, logprob }`
+          - `"output_text"`
+
+        - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
           - `token: string`
 
@@ -19150,15 +22380,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `logprob: number`
 
-        - `text: string`
-
-          The text output from the model.
+          - `top_logprobs: array of object { token, bytes, logprob }`
 
-        - `type: "output_text"`
+            - `token: string`
 
-          The type of the output text. Always `output_text`.
+            - `bytes: array of number`
 
-          - `"output_text"`
+            - `logprob: number`
 
       - `TextContent object { text, type }`
 
@@ -19212,9 +22440,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"refusal"`
 
-      - `ResponseInputImage object { detail, type, file_id, image_url }`
+      - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-        An image input to the model. Learn about [image inputs](/docs/guides/vision).
+        An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
         - `detail: "low" or "high" or "auto" or "original"`
 
@@ -19242,7 +22470,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-      - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
         A screenshot of a computer.
 
@@ -19272,7 +22510,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"computer_screenshot"`
 
-      - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
+      - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
         A file input to the model.
 
@@ -19282,9 +22530,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"input_file"`
 
-        - `detail: optional "low" or "high"`
+        - `detail: optional "auto" or "low" or "high"`
 
-          The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+          The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+          - `"auto"`
 
           - `"low"`
 
@@ -19306,6 +22556,16 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The name of the file to be sent to the model.
 
+        - `prompt_cache_breakpoint: optional object { mode }`
+
+          Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+          - `mode: "explicit"`
+
+            The breakpoint mode. Always `explicit`.
+
+            - `"explicit"`
+
     - `role: "unknown" or "user" or "assistant" or 5 more`
 
       The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -19350,7 +22610,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"final_answer"`
 
-  - `FunctionCall object { id, arguments, call_id, 5 more }`
+  - `FunctionCall object { id, arguments, call_id, 6 more }`
 
     - `id: string`
 
@@ -19385,6 +22645,26 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"function_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
@@ -19393,7 +22673,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       The namespace of the function to run.
 
-  - `FunctionCallOutput object { id, call_id, output, 3 more }`
+  - `FunctionCallOutput object { id, call_id, output, 4 more }`
 
     - `id: string`
 
@@ -19416,15 +22696,15 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         Text, image, or file output of the function call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -19445,6 +22725,30 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"function_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
@@ -19452,7 +22756,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
   - `FileSearchCall object { id, queries, status, 2 more }`
 
     The results of a file search tool call. See the
-    [file search guide](/docs/guides/tools-file-search) for more information.
+    [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
     - `id: string`
 
@@ -19520,7 +22824,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
   - `WebSearchCall object { id, action, status, type }`
 
     The results of a web search tool call. See the
-    [web search guide](/docs/guides/tools-web-search) for more information.
+    [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
     - `id: string`
 
@@ -19646,7 +22950,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
   - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
     A tool call to a computer use tool. See the
-    [computer use guide](/docs/guides/tools-computer-use) for more information.
+    [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
     - `id: string`
 
@@ -19689,7 +22993,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"computer_call"`
 
-    - `action: optional ComputerAction`
+    - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
 
       A click action.
 
@@ -19893,92 +23197,247 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         A click action.
 
-      - `DoubleClick object { keys, type, x, y }`
+        - `button: "left" or "right" or "wheel" or 2 more`
 
-        A double click action.
+          Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
 
-      - `Drag object { path, type, keys }`
+          - `"left"`
 
-        A drag action.
+          - `"right"`
 
-      - `Keypress object { keys, type }`
+          - `"wheel"`
 
-        A collection of keypresses the model would like to perform.
+          - `"back"`
 
-      - `Move object { type, x, y, keys }`
+          - `"forward"`
 
-        A mouse move action.
+        - `type: "click"`
 
-      - `Screenshot object { type }`
+          Specifies the event type. For a click action, this property is always `click`.
 
-        A screenshot action.
+          - `"click"`
 
-      - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+        - `x: number`
 
-        A scroll action.
+          The x-coordinate where the click occurred.
 
-      - `Type object { text, type }`
+        - `y: number`
 
-        An action to type in text.
+          The y-coordinate where the click occurred.
 
-      - `Wait object { type }`
+        - `keys: optional array of string`
 
-        A wait action.
+          The keys being held while clicking.
 
-  - `ComputerCallOutput object { id, call_id, output, 4 more }`
+      - `DoubleClick object { keys, type, x, y }`
 
-    - `id: string`
+        A double click action.
 
-      The unique ID of the computer call tool output.
+        - `keys: array of string`
 
-    - `call_id: string`
+          The keys being held while double-clicking.
 
-      The ID of the computer tool call that produced the output.
+        - `type: "double_click"`
 
-    - `output: ResponseComputerToolCallOutputScreenshot`
+          Specifies the event type. For a double click action, this property is always set to `double_click`.
 
-      A computer screenshot image used with the computer use tool.
+          - `"double_click"`
 
-      - `type: "computer_screenshot"`
+        - `x: number`
 
-        Specifies the event type. For a computer screenshot, this property is
-        always set to `computer_screenshot`.
+          The x-coordinate where the double click occurred.
 
-        - `"computer_screenshot"`
+        - `y: number`
 
-      - `file_id: optional string`
+          The y-coordinate where the double click occurred.
 
-        The identifier of an uploaded file that contains the screenshot.
+      - `Drag object { path, type, keys }`
 
-      - `image_url: optional string`
+        A drag action.
 
-        The URL of the screenshot image.
+        - `path: array of object { x, y }`
 
-    - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+          An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
 
-      The status of the message input. One of `in_progress`, `completed`, or
-      `incomplete`. Populated when input items are returned via API.
+          ```
+          [
+            { x: 100, y: 200 },
+            { x: 200, y: 300 }
+          ]
+          ```
 
-      - `"completed"`
+          - `x: number`
 
-      - `"incomplete"`
+            The x-coordinate.
 
-      - `"failed"`
+          - `y: number`
 
-      - `"in_progress"`
+            The y-coordinate.
 
-    - `type: "computer_call_output"`
+        - `type: "drag"`
 
-      The type of the computer tool call output. Always `computer_call_output`.
+          Specifies the event type. For a drag action, this property is always set to `drag`.
 
-      - `"computer_call_output"`
+          - `"drag"`
 
-    - `acknowledged_safety_checks: optional array of object { id, code, message }`
+        - `keys: optional array of string`
 
-      The safety checks reported by the API that have been acknowledged by the
-      developer.
+          The keys being held while dragging the mouse.
 
-      - `id: string`
+      - `Keypress object { keys, type }`
+
+        A collection of keypresses the model would like to perform.
+
+        - `keys: array of string`
+
+          The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+        - `type: "keypress"`
+
+          Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+          - `"keypress"`
+
+      - `Move object { type, x, y, keys }`
+
+        A mouse move action.
+
+        - `type: "move"`
+
+          Specifies the event type. For a move action, this property is always set to `move`.
+
+          - `"move"`
+
+        - `x: number`
+
+          The x-coordinate to move to.
+
+        - `y: number`
+
+          The y-coordinate to move to.
+
+        - `keys: optional array of string`
+
+          The keys being held while moving the mouse.
+
+      - `Screenshot object { type }`
+
+        A screenshot action.
+
+        - `type: "screenshot"`
+
+          Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+          - `"screenshot"`
+
+      - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+
+        A scroll action.
+
+        - `scroll_x: number`
+
+          The horizontal scroll distance.
+
+        - `scroll_y: number`
+
+          The vertical scroll distance.
+
+        - `type: "scroll"`
+
+          Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+          - `"scroll"`
+
+        - `x: number`
+
+          The x-coordinate where the scroll occurred.
+
+        - `y: number`
+
+          The y-coordinate where the scroll occurred.
+
+        - `keys: optional array of string`
+
+          The keys being held while scrolling.
+
+      - `Type object { text, type }`
+
+        An action to type in text.
+
+        - `text: string`
+
+          The text to type.
+
+        - `type: "type"`
+
+          Specifies the event type. For a type action, this property is always set to `type`.
+
+          - `"type"`
+
+      - `Wait object { type }`
+
+        A wait action.
+
+        - `type: "wait"`
+
+          Specifies the event type. For a wait action, this property is always set to `wait`.
+
+          - `"wait"`
+
+  - `ComputerCallOutput object { id, call_id, output, 4 more }`
+
+    - `id: string`
+
+      The unique ID of the computer call tool output.
+
+    - `call_id: string`
+
+      The ID of the computer tool call that produced the output.
+
+    - `output: ResponseComputerToolCallOutputScreenshot`
+
+      A computer screenshot image used with the computer use tool.
+
+      - `type: "computer_screenshot"`
+
+        Specifies the event type. For a computer screenshot, this property is
+        always set to `computer_screenshot`.
+
+        - `"computer_screenshot"`
+
+      - `file_id: optional string`
+
+        The identifier of an uploaded file that contains the screenshot.
+
+      - `image_url: optional string`
+
+        The URL of the screenshot image.
+
+    - `status: "completed" or "incomplete" or "failed" or "in_progress"`
+
+      The status of the message input. One of `in_progress`, `completed`, or
+      `incomplete`. Populated when input items are returned via API.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+      - `"failed"`
+
+      - `"in_progress"`
+
+    - `type: "computer_call_output"`
+
+      The type of the computer tool call output. Always `computer_call_output`.
+
+      - `"computer_call_output"`
+
+    - `acknowledged_safety_checks: optional array of object { id, code, message }`
+
+      The safety checks reported by the API that have been acknowledged by the
+      developer.
+
+      - `id: string`
 
         The ID of the pending safety check.
 
@@ -20064,11 +23523,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"incomplete"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The loaded tool definitions returned by tool search.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -20082,7 +23541,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -20090,6 +23549,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -20098,6 +23565,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -20268,7 +23739,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -20325,10 +23796,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -20340,6 +23811,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -20372,7 +23851,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -20472,7 +23951,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -20558,6 +24037,22 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -20580,8 +24075,19 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -20610,13 +24116,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -20624,8 +24130,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -20694,7 +24206,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -20704,6 +24216,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -20830,9 +24350,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"container_reference"`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -20844,6 +24364,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -20900,11 +24428,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -20912,19 +24440,33 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+          - `Custom object { name, type, allowed_callers, 3 more }`
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -20936,6 +24478,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -21034,7 +24584,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -21044,6 +24594,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "tool_search_output"`
 
       The type of the item. Always `tool_search_output`.
@@ -21080,11 +24638,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"tool"`
 
-    - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+    - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
       The additional tool definitions made available at this item.
 
-      - `Function object { name, parameters, strict, 3 more }`
+      - `Function object { name, parameters, strict, 5 more }`
 
         Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -21098,7 +24656,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `strict: boolean`
 
-          Whether to enforce strict parameter validation. Default `true`.
+          Whether strict parameter validation is enforced for this function tool.
 
         - `type: "function"`
 
@@ -21106,6 +24664,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"function"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this function is deferred and loaded via tool search.
@@ -21114,6 +24680,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           A description of the function. Used by the model to determine whether or not to call the function.
 
+        - `output_schema: optional map[unknown]`
+
+          A JSON schema object describing the JSON value encoded in string outputs for this function.
+
       - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
         A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -21217,7 +24787,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
       - `WebSearch object { type, filters, search_context_size, user_location }`
 
         Search the Internet for sources related to the prompt. Learn more about the
-        [web search tool](/docs/guides/tools-web-search).
+        [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
         - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -21274,10 +24844,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"approximate"`
 
-      - `Mcp object { server_label, type, allowed_tools, 8 more }`
+      - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
         Give the model access to additional tools via remote Model Context Protocol
-        (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+        (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
         - `server_label: string`
 
@@ -21289,6 +24859,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"mcp"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
           List of allowed tool names or a filter object.
@@ -21321,7 +24899,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           Identifier for service connectors, like those available in ChatGPT. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-          about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+          about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
           Currently supported `connector_id` values are:
 
@@ -21421,7 +24999,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
           The Secure MCP Tunnel ID to use instead of a direct server URL. One of
           `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-      - `CodeInterpreter object { container, type }`
+      - `CodeInterpreter object { container, type, allowed_callers }`
 
         A tool that runs Python code to help generate a response to a prompt.
 
@@ -21475,6 +25053,22 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"code_interpreter"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
+      - `ProgrammaticToolCalling object { type }`
+
+        - `type: "programmatic_tool_calling"`
+
+          The type of the tool. Always `programmatic_tool_calling`.
+
+          - `"programmatic_tool_calling"`
+
       - `ImageGeneration object { type, action, background, 9 more }`
 
         A tool that generates images using the GPT image models.
@@ -21497,8 +25091,19 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `background: optional "transparent" or "opaque" or "auto"`
 
-          Background type for the generated image. One of `transparent`,
-          `opaque`, or `auto`. Default: `auto`.
+          Allows to set transparency for the background of the generated image(s).
+          This parameter is only supported for GPT image models that support
+          transparent backgrounds. Must be one of `transparent`, `opaque`, or
+          `auto` (default value). When `auto` is used, the model will
+          automatically determine the best background for the image.
+
+          `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+          transparent backgrounds. Requests with `background` set to
+          `transparent` will return an error for these models; use `opaque` or
+          `auto` instead.
+
+          If `transparent`, the output format needs to support transparency,
+          so it should be set to either `png` (default value) or `webp`.
 
           - `"transparent"`
 
@@ -21527,13 +25132,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             Base64-encoded mask image.
 
-        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+        - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
           The image generation model to use. Default: `gpt-image-1`.
 
           - `string`
 
-          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
@@ -21541,8 +25146,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"gpt-image-1-mini"`
 
+            - `"gpt-image-2"`
+
+            - `"gpt-image-2-2026-04-21"`
+
             - `"gpt-image-1.5"`
 
+            - `"chatgpt-image-latest"`
+
         - `moderation: optional "auto" or "low"`
 
           Moderation level for the generated image. Default: `auto`.
@@ -21611,7 +25222,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"local_shell"`
 
-      - `Shell object { type, environment }`
+      - `Shell object { type, allowed_callers, environment }`
 
         A tool that allows the model to execute shell commands.
 
@@ -21621,6 +25232,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"shell"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
           - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -21629,9 +25248,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `ContainerReference object { container_id, type }`
 
-      - `Custom object { name, type, defer_loading, 2 more }`
+      - `Custom object { name, type, allowed_callers, 3 more }`
 
-        A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+        A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
         - `name: string`
 
@@ -21643,6 +25262,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"custom"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
         - `defer_loading: optional boolean`
 
           Whether this tool should be deferred and discovered via tool search.
@@ -21667,11 +25294,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The namespace name used in tool calls (for example, `crm`).
 
-        - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+        - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
           The function/custom tools available inside this namespace.
 
-          - `Function object { name, type, defer_loading, 3 more }`
+          - `Function object { name, type, allowed_callers, 5 more }`
 
             - `name: string`
 
@@ -21679,19 +25306,33 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"function"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this function should be deferred and discovered via tool search.
 
             - `description: optional string`
 
+            - `output_schema: optional map[unknown]`
+
+              A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
             - `parameters: optional unknown`
 
             - `strict: optional boolean`
 
-          - `Custom object { name, type, defer_loading, 2 more }`
+              Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+          - `Custom object { name, type, allowed_callers, 3 more }`
 
-            A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+            A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
             - `name: string`
 
@@ -21703,6 +25344,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"custom"`
 
+            - `allowed_callers: optional array of "direct" or "programmatic"`
+
+              The tool invocation context(s).
+
+              - `"direct"`
+
+              - `"programmatic"`
+
             - `defer_loading: optional boolean`
 
               Whether this tool should be deferred and discovered via tool search.
@@ -21801,7 +25450,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-      - `ApplyPatch object { type }`
+      - `ApplyPatch object { type, allowed_callers }`
 
         Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -21811,6 +25460,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `"apply_patch"`
 
+        - `allowed_callers: optional array of "direct" or "programmatic"`
+
+          The tool invocation context(s).
+
+          - `"direct"`
+
+          - `"programmatic"`
+
     - `type: "additional_tools"`
 
       The type of the item. Always `additional_tools`.
@@ -21822,13 +25479,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
     A description of the chain of thought used by a reasoning model while generating
     a response. Be sure to include these items in your `input` to the Responses API
     for subsequent turns of a conversation if you are manually
-    [managing context](/docs/guides/conversation-state).
+    [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
     - `id: string`
 
       The unique identifier of the reasoning content.
 
-    - `summary: array of SummaryTextContent`
+    - `summary: array of object { text, type }`
 
       Reasoning summary content.
 
@@ -21840,6 +25497,8 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         The type of the object. Always `summary_text`.
 
+        - `"summary_text"`
+
     - `type: "reasoning"`
 
       The type of the object. Always `reasoning`.
@@ -21876,19 +25535,71 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"incomplete"`
 
-  - `Compaction object { id, encrypted_content, type, created_by }`
-
-    A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+  - `Program object { id, call_id, code, 2 more }`
 
     - `id: string`
 
-      The unique ID of the compaction item.
+      The unique ID of the program item.
 
-    - `encrypted_content: string`
+    - `call_id: string`
 
-      The encrypted content that was produced by compaction.
+      The stable call ID of the program item.
 
-    - `type: "compaction"`
+    - `code: string`
+
+      The JavaScript source executed by programmatic tool calling.
+
+    - `fingerprint: string`
+
+      Opaque program replay fingerprint that must be round-tripped.
+
+    - `type: "program"`
+
+      The type of the item. Always `program`.
+
+      - `"program"`
+
+  - `ProgramOutput object { id, call_id, result, 2 more }`
+
+    - `id: string`
+
+      The unique ID of the program output item.
+
+    - `call_id: string`
+
+      The call ID of the program item.
+
+    - `result: string`
+
+      The result produced by the program item.
+
+    - `status: "completed" or "incomplete"`
+
+      The terminal status of the program output item.
+
+      - `"completed"`
+
+      - `"incomplete"`
+
+    - `type: "program_output"`
+
+      The type of the item. Always `program_output`.
+
+      - `"program_output"`
+
+  - `Compaction object { id, encrypted_content, type, created_by }`
+
+    A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
+
+    - `id: string`
+
+      The unique ID of the compaction item.
+
+    - `encrypted_content: string`
+
+      The encrypted content that was produced by compaction.
+
+    - `type: "compaction"`
 
       The type of the item. Always `compaction`.
 
@@ -22053,7 +25764,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"incomplete"`
 
-  - `ShellCall object { id, action, call_id, 4 more }`
+  - `ShellCall object { id, action, call_id, 5 more }`
 
     A tool call that executes one or more shell commands in a managed environment.
 
@@ -22121,11 +25832,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"shell_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call.
 
-  - `ShellCallOutput object { id, call_id, max_output_length, 4 more }`
+  - `ShellCallOutput object { id, call_id, max_output_length, 5 more }`
 
     The output of a shell tool call that was emitted.
 
@@ -22201,11 +25932,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"shell_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The identifier of the actor that created the item.
 
-  - `ApplyPatchCall object { id, call_id, operation, 3 more }`
+  - `ApplyPatchCall object { id, call_id, operation, 4 more }`
 
     A tool call that applies file diffs by creating, deleting, or updating files.
 
@@ -22285,11 +26036,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"apply_patch_call"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call.
 
-  - `ApplyPatchCallOutput object { id, call_id, status, 3 more }`
+  - `ApplyPatchCallOutput object { id, call_id, status, 4 more }`
 
     The output emitted by an apply patch tool call.
 
@@ -22315,6 +26086,26 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"apply_patch_call_output"`
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `created_by: optional string`
 
       The ID of the entity that created this tool call output.
@@ -22470,7 +26261,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       - `"failed"`
 
-  - `CustomToolCall object { call_id, input, name, 3 more }`
+  - `CustomToolCall object { call_id, input, name, 4 more }`
 
     A call to a custom tool created by the model.
 
@@ -22496,11 +26287,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       The unique ID of the custom tool call in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          - `"program"`
+
     - `namespace: optional string`
 
       The namespace of the custom tool being called.
 
-  - `CustomToolCallOutput object { call_id, output, type, id }`
+  - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
     The output of a custom tool call from your code, being sent back to the model.
 
@@ -22521,15 +26332,15 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         Text, image, or file output of the custom tool call.
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -22543,6 +26354,30 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
       The unique ID of the custom tool call output in the OpenAI platform.
 
+    - `caller: optional object { type }  or object { caller_id, type }`
+
+      The execution context that produced this tool call.
+
+      - `Direct object { type }`
+
+        - `type: "direct"`
+
+          The caller type. Always `direct`.
+
+          - `"direct"`
+
+      - `Program object { caller_id, type }`
+
+        - `caller_id: string`
+
+          The call ID of the program item that produced this tool call.
+
+        - `type: "program"`
+
+          The caller type. Always `program`.
+
+          - `"program"`
+
 ### Conversation Item List
 
 - `ConversationItemList object { data, first_id, has_more, 2 more }`
@@ -22565,7 +26400,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         The content of the message
 
-        - `ResponseInputText object { text, type }`
+        - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
           A text input to the model.
 
@@ -22579,7 +26414,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"input_text"`
 
-        - `ResponseOutputText object { annotations, logprobs, text, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseOutputText object { annotations, text, type, logprobs }`
 
           A text output from the model.
 
@@ -22683,15 +26528,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"file_path"`
 
-          - `logprobs: array of object { token, bytes, logprob, top_logprobs }`
+          - `text: string`
 
-            - `token: string`
+            The text output from the model.
 
-            - `bytes: array of number`
+          - `type: "output_text"`
 
-            - `logprob: number`
+            The type of the output text. Always `output_text`.
 
-            - `top_logprobs: array of object { token, bytes, logprob }`
+            - `"output_text"`
+
+          - `logprobs: optional array of object { token, bytes, logprob, top_logprobs }`
 
             - `token: string`
 
@@ -22699,15 +26546,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `logprob: number`
 
-          - `text: string`
-
-            The text output from the model.
+            - `top_logprobs: array of object { token, bytes, logprob }`
 
-          - `type: "output_text"`
+              - `token: string`
 
-            The type of the output text. Always `output_text`.
+              - `bytes: array of number`
 
-            - `"output_text"`
+              - `logprob: number`
 
         - `TextContent object { text, type }`
 
@@ -22761,9 +26606,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"refusal"`
 
-        - `ResponseInputImage object { detail, type, file_id, image_url }`
+        - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-          An image input to the model. Learn about [image inputs](/docs/guides/vision).
+          An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
           - `detail: "low" or "high" or "auto" or "original"`
 
@@ -22791,7 +26636,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL.
 
-        - `ComputerScreenshotContent object { detail, file_id, image_url, type }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }`
 
           A screenshot of a computer.
 
@@ -22821,7 +26676,17 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"computer_screenshot"`
 
-        - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
+        - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
           A file input to the model.
 
@@ -22831,9 +26696,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"input_file"`
 
-          - `detail: optional "low" or "high"`
+          - `detail: optional "auto" or "low" or "high"`
 
-            The detail level of the file to be sent to the model. Use `low` for the default rendering behavior, or `high` to render the file at higher quality. Defaults to `low`.
+            The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`.
+
+            - `"auto"`
 
             - `"low"`
 
@@ -22855,6 +26722,16 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The name of the file to be sent to the model.
 
+          - `prompt_cache_breakpoint: optional object { mode }`
+
+            Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block.
+
+            - `mode: "explicit"`
+
+              The breakpoint mode. Always `explicit`.
+
+              - `"explicit"`
+
       - `role: "unknown" or "user" or "assistant" or 5 more`
 
         The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`.
@@ -22899,7 +26776,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"final_answer"`
 
-    - `FunctionCall object { id, arguments, call_id, 5 more }`
+    - `FunctionCall object { id, arguments, call_id, 6 more }`
 
       - `id: string`
 
@@ -22934,6 +26811,26 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"function_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -22942,7 +26839,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         The namespace of the function to run.
 
-    - `FunctionCallOutput object { id, call_id, output, 3 more }`
+    - `FunctionCallOutput object { id, call_id, output, 4 more }`
 
       - `id: string`
 
@@ -22965,15 +26862,15 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           Text, image, or file output of the function call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -22994,6 +26891,30 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"function_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
@@ -23001,7 +26922,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
     - `FileSearchCall object { id, queries, status, 2 more }`
 
       The results of a file search tool call. See the
-      [file search guide](/docs/guides/tools-file-search) for more information.
+      [file search guide](https://platform.openai.com/docs/guides/tools-file-search) for more information.
 
       - `id: string`
 
@@ -23069,7 +26990,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
     - `WebSearchCall object { id, action, status, type }`
 
       The results of a web search tool call. See the
-      [web search guide](/docs/guides/tools-web-search) for more information.
+      [web search guide](https://platform.openai.com/docs/guides/tools-web-search) for more information.
 
       - `id: string`
 
@@ -23195,7 +27116,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
     - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }`
 
       A tool call to a computer use tool. See the
-      [computer use guide](/docs/guides/tools-computer-use) for more information.
+      [computer use guide](https://platform.openai.com/docs/guides/tools-computer-use) for more information.
 
       - `id: string`
 
@@ -23217,30 +27138,226 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The type of the pending safety check.
 
-        - `message: optional string`
+        - `message: optional string`
+
+          Details about the pending safety check.
+
+      - `status: "in_progress" or "completed" or "incomplete"`
+
+        The status of the item. One of `in_progress`, `completed`, or
+        `incomplete`. Populated when items are returned via API.
+
+        - `"in_progress"`
+
+        - `"completed"`
+
+        - `"incomplete"`
+
+      - `type: "computer_call"`
+
+        The type of the computer call. Always `computer_call`.
+
+        - `"computer_call"`
+
+      - `action: optional object { button, type, x, 2 more }  or object { keys, type, x, y }  or object { path, type, keys }  or 6 more`
+
+        A click action.
+
+        - `Click object { button, type, x, 2 more }`
+
+          A click action.
+
+          - `button: "left" or "right" or "wheel" or 2 more`
+
+            Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`.
+
+            - `"left"`
+
+            - `"right"`
+
+            - `"wheel"`
+
+            - `"back"`
+
+            - `"forward"`
+
+          - `type: "click"`
+
+            Specifies the event type. For a click action, this property is always `click`.
+
+            - `"click"`
+
+          - `x: number`
+
+            The x-coordinate where the click occurred.
+
+          - `y: number`
+
+            The y-coordinate where the click occurred.
+
+          - `keys: optional array of string`
+
+            The keys being held while clicking.
+
+        - `DoubleClick object { keys, type, x, y }`
+
+          A double click action.
+
+          - `keys: array of string`
+
+            The keys being held while double-clicking.
+
+          - `type: "double_click"`
+
+            Specifies the event type. For a double click action, this property is always set to `double_click`.
+
+            - `"double_click"`
+
+          - `x: number`
+
+            The x-coordinate where the double click occurred.
+
+          - `y: number`
+
+            The y-coordinate where the double click occurred.
+
+        - `Drag object { path, type, keys }`
+
+          A drag action.
+
+          - `path: array of object { x, y }`
+
+            An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg
+
+            ```
+            [
+              { x: 100, y: 200 },
+              { x: 200, y: 300 }
+            ]
+            ```
+
+            - `x: number`
+
+              The x-coordinate.
+
+            - `y: number`
+
+              The y-coordinate.
+
+          - `type: "drag"`
+
+            Specifies the event type. For a drag action, this property is always set to `drag`.
+
+            - `"drag"`
+
+          - `keys: optional array of string`
+
+            The keys being held while dragging the mouse.
+
+        - `Keypress object { keys, type }`
+
+          A collection of keypresses the model would like to perform.
+
+          - `keys: array of string`
+
+            The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key.
+
+          - `type: "keypress"`
+
+            Specifies the event type. For a keypress action, this property is always set to `keypress`.
+
+            - `"keypress"`
+
+        - `Move object { type, x, y, keys }`
+
+          A mouse move action.
+
+          - `type: "move"`
+
+            Specifies the event type. For a move action, this property is always set to `move`.
+
+            - `"move"`
+
+          - `x: number`
+
+            The x-coordinate to move to.
+
+          - `y: number`
+
+            The y-coordinate to move to.
+
+          - `keys: optional array of string`
+
+            The keys being held while moving the mouse.
+
+        - `Screenshot object { type }`
+
+          A screenshot action.
+
+          - `type: "screenshot"`
+
+            Specifies the event type. For a screenshot action, this property is always set to `screenshot`.
+
+            - `"screenshot"`
+
+        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
+
+          A scroll action.
+
+          - `scroll_x: number`
+
+            The horizontal scroll distance.
+
+          - `scroll_y: number`
+
+            The vertical scroll distance.
+
+          - `type: "scroll"`
+
+            Specifies the event type. For a scroll action, this property is always set to `scroll`.
+
+            - `"scroll"`
+
+          - `x: number`
+
+            The x-coordinate where the scroll occurred.
+
+          - `y: number`
+
+            The y-coordinate where the scroll occurred.
+
+          - `keys: optional array of string`
+
+            The keys being held while scrolling.
+
+        - `Type object { text, type }`
+
+          An action to type in text.
+
+          - `text: string`
 
-          Details about the pending safety check.
+            The text to type.
 
-      - `status: "in_progress" or "completed" or "incomplete"`
+          - `type: "type"`
 
-        The status of the item. One of `in_progress`, `completed`, or
-        `incomplete`. Populated when items are returned via API.
+            Specifies the event type. For a type action, this property is always set to `type`.
 
-        - `"in_progress"`
+            - `"type"`
 
-        - `"completed"`
+        - `Wait object { type }`
 
-        - `"incomplete"`
+          A wait action.
 
-      - `type: "computer_call"`
+          - `type: "wait"`
 
-        The type of the computer call. Always `computer_call`.
+            Specifies the event type. For a wait action, this property is always set to `wait`.
 
-        - `"computer_call"`
+            - `"wait"`
 
-      - `action: optional ComputerAction`
+      - `actions: optional ComputerActionList`
 
-        A click action.
+        Flattened batched actions for `computer_use`. Each action includes an
+        `type` discriminator and action-specific fields.
 
         - `Click object { button, type, x, 2 more }`
 
@@ -23433,47 +27550,6 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"wait"`
 
-      - `actions: optional ComputerActionList`
-
-        Flattened batched actions for `computer_use`. Each action includes an
-        `type` discriminator and action-specific fields.
-
-        - `Click object { button, type, x, 2 more }`
-
-          A click action.
-
-        - `DoubleClick object { keys, type, x, y }`
-
-          A double click action.
-
-        - `Drag object { path, type, keys }`
-
-          A drag action.
-
-        - `Keypress object { keys, type }`
-
-          A collection of keypresses the model would like to perform.
-
-        - `Move object { type, x, y, keys }`
-
-          A mouse move action.
-
-        - `Screenshot object { type }`
-
-          A screenshot action.
-
-        - `Scroll object { scroll_x, scroll_y, type, 3 more }`
-
-          A scroll action.
-
-        - `Type object { text, type }`
-
-          An action to type in text.
-
-        - `Wait object { type }`
-
-          A wait action.
-
     - `ComputerCallOutput object { id, call_id, output, 4 more }`
 
       - `id: string`
@@ -23613,11 +27689,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"incomplete"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The loaded tool definitions returned by tool search.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -23631,7 +27707,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -23639,6 +27715,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -23647,6 +27731,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -23817,7 +27905,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -23874,10 +27962,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -23889,6 +27977,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -23921,7 +28017,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -24021,7 +28117,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -24107,6 +28203,22 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -24129,8 +28241,19 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -24159,13 +28282,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -24173,8 +28296,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -24243,7 +28372,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -24253,6 +28382,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -24379,9 +28516,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"container_reference"`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -24393,6 +28530,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -24449,11 +28594,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -24461,19 +28606,33 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -24485,6 +28644,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -24583,7 +28750,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -24593,6 +28760,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "tool_search_output"`
 
         The type of the item. Always `tool_search_output`.
@@ -24629,11 +28804,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"tool"`
 
-      - `tools: array of object { name, parameters, strict, 3 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 12 more`
+      - `tools: array of object { name, parameters, strict, 5 more }  or object { type, vector_store_ids, filters, 2 more }  or object { type }  or 13 more`
 
         The additional tool definitions made available at this item.
 
-        - `Function object { name, parameters, strict, 3 more }`
+        - `Function object { name, parameters, strict, 5 more }`
 
           Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling).
 
@@ -24647,7 +28822,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `strict: boolean`
 
-            Whether to enforce strict parameter validation. Default `true`.
+            Whether strict parameter validation is enforced for this function tool.
 
           - `type: "function"`
 
@@ -24655,6 +28830,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"function"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this function is deferred and loaded via tool search.
@@ -24663,6 +28846,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             A description of the function. Used by the model to determine whether or not to call the function.
 
+          - `output_schema: optional map[unknown]`
+
+            A JSON schema object describing the JSON value encoded in string outputs for this function.
+
         - `FileSearch object { type, vector_store_ids, filters, 2 more }`
 
           A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search).
@@ -24766,7 +28953,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
         - `WebSearch object { type, filters, search_context_size, user_location }`
 
           Search the Internet for sources related to the prompt. Learn more about the
-          [web search tool](/docs/guides/tools-web-search).
+          [web search tool](https://platform.openai.com/docs/guides/tools-web-search).
 
           - `type: "web_search" or "web_search_2025_08_26"`
 
@@ -24823,10 +29010,10 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"approximate"`
 
-        - `Mcp object { server_label, type, allowed_tools, 8 more }`
+        - `Mcp object { server_label, type, allowed_callers, 9 more }`
 
           Give the model access to additional tools via remote Model Context Protocol
-          (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp).
+          (MCP) servers. [Learn more about MCP](https://platform.openai.com/docs/guides/tools-remote-mcp).
 
           - `server_label: string`
 
@@ -24838,6 +29025,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"mcp"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `allowed_tools: optional array of string or object { read_only, tool_names }`
 
             List of allowed tool names or a filter object.
@@ -24870,7 +29065,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             Identifier for service connectors, like those available in ChatGPT. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more
-            about service connectors [here](/docs/guides/tools-remote-mcp#connectors).
+            about service connectors [here](https://platform.openai.com/docs/guides/tools-remote-mcp#connectors).
 
             Currently supported `connector_id` values are:
 
@@ -24970,7 +29165,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
             The Secure MCP Tunnel ID to use instead of a direct server URL. One of
             `server_url`, `connector_id`, or `tunnel_id` must be provided.
 
-        - `CodeInterpreter object { container, type }`
+        - `CodeInterpreter object { container, type, allowed_callers }`
 
           A tool that runs Python code to help generate a response to a prompt.
 
@@ -25024,6 +29219,22 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"code_interpreter"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
+        - `ProgrammaticToolCalling object { type }`
+
+          - `type: "programmatic_tool_calling"`
+
+            The type of the tool. Always `programmatic_tool_calling`.
+
+            - `"programmatic_tool_calling"`
+
         - `ImageGeneration object { type, action, background, 9 more }`
 
           A tool that generates images using the GPT image models.
@@ -25046,8 +29257,19 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           - `background: optional "transparent" or "opaque" or "auto"`
 
-            Background type for the generated image. One of `transparent`,
-            `opaque`, or `auto`. Default: `auto`.
+            Allows to set transparency for the background of the generated image(s).
+            This parameter is only supported for GPT image models that support
+            transparent backgrounds. Must be one of `transparent`, `opaque`, or
+            `auto` (default value). When `auto` is used, the model will
+            automatically determine the best background for the image.
+
+            `gpt-image-2` and `gpt-image-2-2026-04-21` do not support
+            transparent backgrounds. Requests with `background` set to
+            `transparent` will return an error for these models; use `opaque` or
+            `auto` instead.
+
+            If `transparent`, the output format needs to support transparency,
+            so it should be set to either `png` (default value) or `webp`.
 
             - `"transparent"`
 
@@ -25076,13 +29298,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               Base64-encoded mask image.
 
-          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+          - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
             The image generation model to use. Default: `gpt-image-1`.
 
             - `string`
 
-            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5"`
+            - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-2" or 3 more`
 
               The image generation model to use. Default: `gpt-image-1`.
 
@@ -25090,8 +29312,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               - `"gpt-image-1-mini"`
 
+              - `"gpt-image-2"`
+
+              - `"gpt-image-2-2026-04-21"`
+
               - `"gpt-image-1.5"`
 
+              - `"chatgpt-image-latest"`
+
           - `moderation: optional "auto" or "low"`
 
             Moderation level for the generated image. Default: `auto`.
@@ -25160,7 +29388,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"local_shell"`
 
-        - `Shell object { type, environment }`
+        - `Shell object { type, allowed_callers, environment }`
 
           A tool that allows the model to execute shell commands.
 
@@ -25170,6 +29398,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"shell"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference`
 
             - `ContainerAuto object { type, file_ids, memory_limit, 2 more }`
@@ -25178,9 +29414,9 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `ContainerReference object { container_id, type }`
 
-        - `Custom object { name, type, defer_loading, 2 more }`
+        - `Custom object { name, type, allowed_callers, 3 more }`
 
-          A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+          A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
           - `name: string`
 
@@ -25192,6 +29428,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"custom"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
           - `defer_loading: optional boolean`
 
             Whether this tool should be deferred and discovered via tool search.
@@ -25216,11 +29460,11 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             The namespace name used in tool calls (for example, `crm`).
 
-          - `tools: array of object { name, type, defer_loading, 3 more }  or object { name, type, defer_loading, 2 more }`
+          - `tools: array of object { name, type, allowed_callers, 5 more }  or object { name, type, allowed_callers, 3 more }`
 
             The function/custom tools available inside this namespace.
 
-            - `Function object { name, type, defer_loading, 3 more }`
+            - `Function object { name, type, allowed_callers, 5 more }`
 
               - `name: string`
 
@@ -25228,19 +29472,33 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"function"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this function should be deferred and discovered via tool search.
 
               - `description: optional string`
 
+              - `output_schema: optional map[unknown]`
+
+                A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs.
+
               - `parameters: optional unknown`
 
               - `strict: optional boolean`
 
-            - `Custom object { name, type, defer_loading, 2 more }`
+                Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise.
+
+            - `Custom object { name, type, allowed_callers, 3 more }`
 
-              A custom tool that processes input using a specified format. Learn more about   [custom tools](/docs/guides/function-calling#custom-tools)
+              A custom tool that processes input using a specified format. Learn more about   [custom tools](https://platform.openai.com/docs/guides/function-calling#custom-tools)
 
               - `name: string`
 
@@ -25252,6 +29510,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
                 - `"custom"`
 
+              - `allowed_callers: optional array of "direct" or "programmatic"`
+
+                The tool invocation context(s).
+
+                - `"direct"`
+
+                - `"programmatic"`
+
               - `defer_loading: optional boolean`
 
                 Whether this tool should be deferred and discovered via tool search.
@@ -25350,7 +29616,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
               The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`.
 
-        - `ApplyPatch object { type }`
+        - `ApplyPatch object { type, allowed_callers }`
 
           Allows the assistant to create, delete, or update files using unified diffs.
 
@@ -25360,6 +29626,14 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
             - `"apply_patch"`
 
+          - `allowed_callers: optional array of "direct" or "programmatic"`
+
+            The tool invocation context(s).
+
+            - `"direct"`
+
+            - `"programmatic"`
+
       - `type: "additional_tools"`
 
         The type of the item. Always `additional_tools`.
@@ -25371,13 +29645,13 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
       A description of the chain of thought used by a reasoning model while generating
       a response. Be sure to include these items in your `input` to the Responses API
       for subsequent turns of a conversation if you are manually
-      [managing context](/docs/guides/conversation-state).
+      [managing context](https://platform.openai.com/docs/guides/conversation-state).
 
       - `id: string`
 
         The unique identifier of the reasoning content.
 
-      - `summary: array of SummaryTextContent`
+      - `summary: array of object { text, type }`
 
         Reasoning summary content.
 
@@ -25389,6 +29663,8 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           The type of the object. Always `summary_text`.
 
+          - `"summary_text"`
+
       - `type: "reasoning"`
 
         The type of the object. Always `reasoning`.
@@ -25425,9 +29701,61 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"incomplete"`
 
+    - `Program object { id, call_id, code, 2 more }`
+
+      - `id: string`
+
+        The unique ID of the program item.
+
+      - `call_id: string`
+
+        The stable call ID of the program item.
+
+      - `code: string`
+
+        The JavaScript source executed by programmatic tool calling.
+
+      - `fingerprint: string`
+
+        Opaque program replay fingerprint that must be round-tripped.
+
+      - `type: "program"`
+
+        The type of the item. Always `program`.
+
+        - `"program"`
+
+    - `ProgramOutput object { id, call_id, result, 2 more }`
+
+      - `id: string`
+
+        The unique ID of the program output item.
+
+      - `call_id: string`
+
+        The call ID of the program item.
+
+      - `result: string`
+
+        The result produced by the program item.
+
+      - `status: "completed" or "incomplete"`
+
+        The terminal status of the program output item.
+
+        - `"completed"`
+
+        - `"incomplete"`
+
+      - `type: "program_output"`
+
+        The type of the item. Always `program_output`.
+
+        - `"program_output"`
+
     - `Compaction object { id, encrypted_content, type, created_by }`
 
-      A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact).
+      A compaction item generated by the [`v1/responses/compact` API](https://platform.openai.com/docs/api-reference/responses/compact).
 
       - `id: string`
 
@@ -25602,7 +29930,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"incomplete"`
 
-    - `ShellCall object { id, action, call_id, 4 more }`
+    - `ShellCall object { id, action, call_id, 5 more }`
 
       A tool call that executes one or more shell commands in a managed environment.
 
@@ -25670,11 +29998,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"shell_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ShellCallOutput object { id, call_id, max_output_length, 4 more }`
+    - `ShellCallOutput object { id, call_id, max_output_length, 5 more }`
 
       The output of a shell tool call that was emitted.
 
@@ -25750,11 +30098,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"shell_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The identifier of the actor that created the item.
 
-    - `ApplyPatchCall object { id, call_id, operation, 3 more }`
+    - `ApplyPatchCall object { id, call_id, operation, 4 more }`
 
       A tool call that applies file diffs by creating, deleting, or updating files.
 
@@ -25834,11 +30202,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"apply_patch_call"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call.
 
-    - `ApplyPatchCallOutput object { id, call_id, status, 3 more }`
+    - `ApplyPatchCallOutput object { id, call_id, status, 4 more }`
 
       The output emitted by an apply patch tool call.
 
@@ -25864,6 +30252,26 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"apply_patch_call_output"`
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `created_by: optional string`
 
         The ID of the entity that created this tool call output.
@@ -26019,7 +30427,7 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         - `"failed"`
 
-    - `CustomToolCall object { call_id, input, name, 3 more }`
+    - `CustomToolCall object { call_id, input, name, 4 more }`
 
       A call to a custom tool created by the model.
 
@@ -26045,11 +30453,31 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         The unique ID of the custom tool call in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            - `"program"`
+
       - `namespace: optional string`
 
         The namespace of the custom tool being called.
 
-    - `CustomToolCallOutput object { call_id, output, type, id }`
+    - `CustomToolCallOutput object { call_id, output, type, 2 more }`
 
       The output of a custom tool call from your code, being sent back to the model.
 
@@ -26070,15 +30498,15 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
           Text, image, or file output of the custom tool call.
 
-          - `ResponseInputText object { text, type }`
+          - `ResponseInputText object { text, type, prompt_cache_breakpoint }`
 
             A text input to the model.
 
-          - `ResponseInputImage object { detail, type, file_id, image_url }`
+          - `ResponseInputImage object { detail, type, file_id, 2 more }`
 
-            An image input to the model. Learn about [image inputs](/docs/guides/vision).
+            An image input to the model. Learn about [image inputs](https://platform.openai.com/docs/guides/vision).
 
-          - `ResponseInputFile object { type, detail, file_data, 3 more }`
+          - `ResponseInputFile object { type, detail, file_data, 4 more }`
 
             A file input to the model.
 
@@ -26092,6 +30520,30 @@ curl -X DELETE https://api.openai.com/v1/conversations/conv_123/items/msg_abc \
 
         The unique ID of the custom tool call output in the OpenAI platform.
 
+      - `caller: optional object { type }  or object { caller_id, type }`
+
+        The execution context that produced this tool call.
+
+        - `Direct object { type }`
+
+          - `type: "direct"`
+
+            The caller type. Always `direct`.
+
+            - `"direct"`
+
+        - `Program object { caller_id, type }`
+
+          - `caller_id: string`
+
+            The call ID of the program item that produced this tool call.
+
+          - `type: "program"`
+
+            The caller type. Always `program`.
+
+            - `"program"`
+
   - `first_id: string`
 
     The ID of the first item in the list.