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Reference 2026-08-18 22:02 UTC to 2026-08-19 21:01 UTC

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2026
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Details

44 {44 {

45 "ident": "moderation"45 "ident": "moderation"

46 },46 },

47 {

48 "ident": "obfuscation"

49 },

47 {50 {

48 "ident": "service_tier"51 "ident": "service_tier"

49 },52 },

63 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) model",66 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) model",

64 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) object",67 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) object",

65 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) moderation",68 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) moderation",

69 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) obfuscation",

66 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) service_tier",70 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) service_tier",

67 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) system_fingerprint",71 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) system_fingerprint",

68 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) usage"72 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) usage"

201 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) moderation > (property) output"205 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) moderation > (property) output"

202 ]206 ]

203 },207 },

208 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) obfuscation": {

209 "kind": "HttpDeclProperty",

210 "oasRef": "#/components/schemas/CreateChatCompletionStreamResponse/properties/obfuscation",

211 "deprecated": false,

212 "key": "obfuscation",

213 "docstring": "An obfuscation string added to normalize the size of streamed chunks as a\nmitigation to certain side-channel attacks. The field is included by\ndefault and omitted when `stream_options.include_obfuscation` is `false`.\n",

214 "type": {

215 "kind": "HttpTypeString"

216 },

217 "optional": true,

218 "nullable": false,

219 "schemaType": "string",

220 "children": []

221 },

204 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) service_tier": {222 "(resource) chat.completions > (model) chat_completion_chunk > (schema) > (property) service_tier": {

205 "kind": "HttpDeclProperty",223 "kind": "HttpDeclProperty",

206 "oasRef": "#/components/schemas/CreateChatCompletionStreamResponse/properties/service_tier",224 "oasRef": "#/components/schemas/CreateChatCompletionStreamResponse/properties/service_tier",

2152### Example2170### Example

2153 2171 

2154```json2172```json

2155{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{"role":"assistant","content":""},"logprobs":null,"finish_reason":null}]}2173{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{"role":"assistant","content":""},"logprobs":null,"finish_reason":null}],"obfuscation":"r4N7vQ2m"}

2156 2174 

2157{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{"content":"Hello"},"logprobs":null,"finish_reason":null}]}2175{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{"content":"Hello"},"logprobs":null,"finish_reason":null}],"obfuscation":"p9K3xT6w"}

2158 2176 

2159....2177....

2160 2178 

2161{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{},"logprobs":null,"finish_reason":"stop"}]}2179{"id":"chatcmpl-123","object":"chat.completion.chunk","created":1694268190,"model":"gpt-4o-mini", "system_fingerprint": "fp_44709d6fcb", "choices":[{"index":0,"delta":{},"logprobs":null,"finish_reason":"stop"}],"obfuscation":""}

2162```2180```