Documentation 2026-09-14 20:57 UTC to 2026-09-15 21:01 UTC

7paused, and completed tasks and recent runs in **Scheduled**. You can combine7paused, and completed tasks and recent runs in **Scheduled**. You can combine

8scheduled tasks with [skills](https://learn.chatgpt.com/docs/build-skills) for more complex work.8scheduled tasks with [skills](https://learn.chatgpt.com/docs/build-skills) for more complex work.

9 9 

10<ContentModeSwitch group="codex-surface" ids="app,web">

11 

12GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on all plans on

13October 14, 2026. Review scheduled tasks that use GPT-5.5 and choose an

14available replacement before that date. For Codex with ChatGPT sign-in,

15replace `gpt-5.5` with `gpt-5.6-sol` (GPT-5.6 Sol). The OpenAI API isn't

16affected. See [GPT-5.5 retirement](https://learn.chatgpt.com/docs/models#gpt-55-retirement).

17 

18</ContentModeSwitch>

19 

10 20 

11 21 

12[Watch: Schedule tasks with ChatGPT](https://www.youtube.com/watch?v=CToxp125mhc)22[Watch: Schedule tasks with ChatGPT](https://www.youtube.com/watch?v=CToxp125mhc)

18 18 

19```toml19```toml

20# ~/.codex/deep-review.config.toml20# ~/.codex/deep-review.config.toml

21model = "gpt-5.5"21model = "gpt-5.6-sol"

22model_reasoning_effort = "xhigh"22model_reasoning_effort = "xhigh"

23approval_policy = "on-request"23approval_policy = "on-request"

24model_catalog_json = "/Users/me/.codex/model-catalogs/deep-review.json"24model_catalog_json = "/Users/me/.codex/model-catalogs/deep-review.json"

32 {32 {

33 key: "model",33 key: "model",

34 type: "string",34 type: "string",

35 description: "Model to use (e.g., `gpt-5.5`).",35 description: "Model to use (e.g., `gpt-5.6-sol`).",

36 },36 },

37 {37 {

38 key: "review_model",38 key: "review_model",

32 {32 {

33 key: "model",33 key: "model",

34 type: "string",34 type: "string",

35 description: "Model to use (e.g., `gpt-5.5`).",35 description: "Model to use (e.g., `gpt-5.6-sol`).",

36 },36 },

37 {37 {

38 key: "review_model",38 key: "review_model",

767overrides. Users can still change those settings during the current run, and the767overrides. Users can still change those settings during the current run, and the

768defaults apply again the next time the client starts.768defaults apply again the next time the client starts.

769 769 

770If a managed default, macOS MDM profile, or saved configuration pins

771`gpt-5.5` for Codex users signed in with ChatGPT, replace it with

772`gpt-5.6-sol` before October 14, 2026. GPT-5.5 retires from ChatGPT,

773ChatGPT Work, and Codex on all plans on that date. The OpenAI API isn't

774affected. See [workspace model availability](https://learn.chatgpt.com/docs/enterprise/workspace-model-availability#prepare-for-the-gpt-55-retirement).

775 

770If a managed default, macOS MDM profile, or saved configuration pins `gpt-5.4`776If a managed default, macOS MDM profile, or saved configuration pins `gpt-5.4`

771or `gpt-5.4-mini` for users signed in with ChatGPT, update it before August 31, 2026. Replace `gpt-5.4` with `gpt-5.6-terra` and `gpt-5.4-mini` with777or `gpt-5.4-mini` for users signed in with ChatGPT, update it before August 31, 2026. Replace `gpt-5.4` with `gpt-5.6-terra` and `gpt-5.4-mini` with

772`gpt-5.6-luna`. The OpenAI API and Codex authenticated with your own API key778`gpt-5.6-luna`. The OpenAI API and Codex authenticated with your own API key

66ask your OpenAI account team for setup instructions. Selecting a66ask your OpenAI account team for setup instructions. Selecting a

67model or changing local configuration doesn't grant access by itself.67model or changing local configuration doesn't grant access by itself.

68 68 

69## Prepare for the GPT-5.5 retirement

70 

71On October 14, 2026, GPT-5.5 will retire from ChatGPT, ChatGPT Work, and Codex

72on all plans, including consumer, Business, Enterprise, and Edu plans. This

73retirement does not apply to the OpenAI API.

74 

75Before October 14, review workspace defaults for ChatGPT, ChatGPT Work, and

76Codex and choose an available replacement. For Codex with ChatGPT sign-in,

77replace `gpt-5.5` with `gpt-5.6-sol` (GPT-5.6 Sol) in workspace defaults,

78saved model settings, managed configurations, custom agents, and scheduled

79tasks. Check scripts and commands that explicitly select `gpt-5.5` too.

80 

81Changing a default doesn't grant model access. Confirm that the replacement

82is available to the affected users on each client. See

83[Codex models](https://learn.chatgpt.com/docs/models#gpt-55-retirement) and

84[managed configuration](https://learn.chatgpt.com/docs/enterprise/managed-configuration)

85for migration guidance.

86 

69## Prepare for the GPT-5.4 retirement87## Prepare for the GPT-5.4 retirement

70 88 

71On August 31, 2026, GPT-5.4 and GPT-5.4 mini retire from Codex for users signed89On August 31, 2026, GPT-5.4 and GPT-5.4 mini retire from Codex for users signed

2 2 

3> For the complete documentation index, see [llms.txt](https://learn.chatgpt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.3> For the complete documentation index, see [llms.txt](https://learn.chatgpt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.

4 4 

5## GPT-5.5 retirement

6 

7On October 14, 2026, GPT-5.5 will retire from ChatGPT, ChatGPT Work, and Codex

8on all plans, including consumer, Business, Enterprise, and Edu plans. This

9retirement does not apply to the OpenAI API.

10 

11If you use Codex with ChatGPT sign-in, switch to **GPT-5.6 Sol**

12(`gpt-5.6-sol`) before October 14. Replace `gpt-5.5` in workspace defaults,

13saved model settings, managed configurations, custom agents, scheduled tasks,

14and scripts that select a model.

15 

16See [workspace model availability](https://learn.chatgpt.com/docs/enterprise/workspace-model-availability#prepare-for-the-gpt-55-retirement)

17for administrator guidance.

18 

5<ContentModeSwitch group="codex-surface" id="app">19<ContentModeSwitch group="codex-surface" id="app">

6 20 

7 21 

446 slug="gpt-5.5"460 slug="gpt-5.5"

447 imageLabel="5.5"461 imageLabel="5.5"

448 wallpaperUrl="/images/api/models/gpt-5.5.jpg"462 wallpaperUrl="/images/api/models/gpt-5.5.jpg"

449 description="Previous-generation flagship model for complex coding, computer use, knowledge work, and research workflows."463 description="Previous-generation flagship model. Retires from ChatGPT, ChatGPT Work, and Codex on October 14, 2026; remains available on the OpenAI API."

450 data={{464 data={{

451 features: [465 features: [

452 {466 {

555 569 

556## Deprecated Codex models570## Deprecated Codex models

557 571 

572GPT-5.5 retires from Codex with ChatGPT sign-in on October 14, 2026. Replace

573`gpt-5.5` with `gpt-5.6-sol`. See [GPT-5.5 retirement](https://learn.chatgpt.com/docs/models#gpt-55-retirement)

574for the scope and migration checklist.

575 

558The `gpt-5.4` and `gpt-5.4-mini` models retire from Codex with ChatGPT sign-in576The `gpt-5.4` and `gpt-5.4-mini` models retire from Codex with ChatGPT sign-in

559on August 31, 2026. Replace `gpt-5.4` with `gpt-5.6-terra` and577on August 31, 2026. Replace `gpt-5.4` with `gpt-5.6-terra` and

560`gpt-5.4-mini` with `gpt-5.6-luna` in workspace defaults, saved model578`gpt-5.4-mini` with `gpt-5.6-luna` in workspace defaults, saved model

8 8 

9## Fast mode9## Fast mode

10 10 

11GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on all plans on

12October 14, 2026. The OpenAI API isn't affected. See

13[GPT-5.5 retirement](https://learn.chatgpt.com/docs/models#gpt-55-retirement) for migration guidance.

14 

11Codex offers the ability to increase the speed of the model for increased15Codex offers the ability to increase the speed of the model for increased

12credit consumption.16credit consumption.

13 17 

6work, with examples and links to learn more. For every versioned update, bug fix,6work, with examples and links to learn more. For every versioned update, bug fix,

7and minor improvement, see the [Codex changelog](https://learn.chatgpt.com/docs/changelog).7and minor improvement, see the [Codex changelog](https://learn.chatgpt.com/docs/changelog).

8 8 

9## September 14–18, 2026

10 

11### Prepare for GPT-5.5 retirement

12 

13GPT-5.5 will retire from ChatGPT, ChatGPT Work, and Codex on October 14, 2026,

14across all plans. The OpenAI API isn't affected.

15 

16For Codex with ChatGPT sign-in, switch to **GPT-5.6 Sol** (`gpt-5.6-sol`).

17Update saved model settings, workspace defaults, custom agents, scheduled

18tasks, and scripts that still select GPT-5.5 before the retirement date.

19[Read the retirement notice](https://learn.chatgpt.com/docs/changelog#codex-2026-09-14-gpt-55-retirement)

20for details.

21 

9## September 7–11, 202622## September 7–11, 2026

10 23 

11### Start a quick chat from your pet24### Start a quick chat from your pet