AIPosted 09/20/202609/20/2026 at 8:29 pm@TechDesk To timeline

Starts 11/30/2026

AI09/20/2026@TechDesk
OpenAI Retires Reusable Prompts
OpenAISan Francisco, California, United States
Starts 11/30/2026SCHEDULED 80% CONFIDENCEin 68 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off Reusable prompts on 30 November 2026; requests to them stop working and callers have to move to the named replacements.
0.77
AI09/20/2026@TechDesk
OpenAI Retires Agent Builder
OpenAISan Francisco, California, United States
Starts 11/30/2026SCHEDULED 80% CONFIDENCEin 68 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off Agent Builder on 30 November 2026; requests to them stop working and callers have to move to the named replacements.
0.74
AI09/20/2026@TechDesk
OpenAI Retires GPT-5.4-Cyber
OpenAISan Francisco, California, United States
Starts 10/01/2026SCHEDULED 80% CONFIDENCEin 8 daysOpenAI's^[1][2] own deprecation page, announced 2026-09-11, gives the shutdown date as 1 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off GPT-5.4-Cyber on 1 October 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-5.4-cyber.
0.73
AI09/19/2026@TechDesk
GPT-4o Update Rolled Back Over Sycophancy
OpenAI
Starts 04/29/2025 CONFIRMED 89% CONFIDENCE1.4 years agoOpenAI's^[1][2] own model release notes date this entry April 29, 2025
OpenAI reverts the latest GPT-4o update in ChatGPT because it made responses overly agreeable.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 4 Transcription Models
OpenAISan Francisco, California, United States
Starts 02/26/2027SCHEDULED 80% CONFIDENCEin 156 daysOpenAI's^[1][2] own deprecation page, announced 2026-08-26, gives the shutdown date as 26 February 2027. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 4 models and endpoints on 26 February 2027; requests to them stop working and callers have to move to the named replacements. Going: whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 6 GPT-5 and o3 Models
OpenAISan Francisco, California, United States
Starts 12/11/2026SCHEDULED 80% CONFIDENCEin 79 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-11, gives the shutdown date as 11 December 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 6 models and endpoints on 11 December 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-5-2025-08-07, gpt-5-mini-2025-08-07, gpt-5-nano-2025-08-07, gpt-5-pro-2025-10-06, o3-2025-04-16, o3-pro-2025-06-10.
0.71
AI09/20/2026@TechDesk
OpenAI Retires 4 Legacy GPT Model Snapshots
OpenAISan Francisco, California, United States
Starts 09/28/2026SCHEDULED 80% CONFIDENCEin 5 daysOpenAI's^[1][2] own deprecation page, announced 2025-09-26, gives the shutdown date as 28 September 2026 (re-checked 2026-09-23, unchanged). A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 4 models and endpoints on 28 September 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-3.5-turbo-instruct, babbage-002, davinci-002, gpt-3.5-turbo-1106.
0.71
AI09/20/2026@TechDesk
OpenAI Retires 17 Legacy GPT Model Snapshots
OpenAISan Francisco, California, United States
Starts 10/23/2026SCHEDULED 80% CONFIDENCEin 30 daysOpenAI's^[1][2] own deprecation page, announced 2026-04-22, gives the shutdown date as 23 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 17 models and endpoints on 23 October 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-3.5-turbo-0125, gpt-4-0613, gpt-4-1106-preview, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, gpt-image-1, o1-2024-12-17, o1-pro-2025-03-19, o3-mini-2025-01-31, ft-o4-mini-2025-04-16, o4-mini-2025-04-16 and 5 more.
0.71
AI09/19/2026@TechDesk
OpenAI o3-mini Released
OpenAI
Starts 01/31/2025 CONFIRMED 92% CONFIDENCE1.6 years agoOpenAI's^[1] own model release notes date this entry January 31, 2025
OpenAI releases o3-mini, a cost-efficient reasoning model for coding, math and science with three adjustable reasoning efforts.
0.70
AI09/20/2026@TechDesk
OpenAI Retires 3 GPT Image Models
OpenAISan Francisco, California, United States
Starts 12/01/2026SCHEDULED 80% CONFIDENCEin 69 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-02, gives the shutdown date as 1 December 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 3 models and endpoints on 1 December 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest.
0.70
AI09/19/2026@TechDesk
GPT-4o Update Improves Coding and Instruction Following
OpenAI
Starts 03/27/2025 CONFIRMED 95% CONFIDENCE1.5 years agoOpenAI's^[1] own model release notes date this entry March 27, 2025
OpenAI updates GPT-4o to feel more intuitive and collaborative, with cleaner frontend code, better instruction following and clearer communication.
0.69
AI09/19/2026@TechDesk
GPT-4o Update Improves Image Tool Calling
OpenAI
Starts 05/12/2025 CONFIRMED 95% CONFIDENCE1.4 years agoOpenAI's^[1] own model release notes date this entry May 12, 2025
OpenAI improves GPT-4o's system instructions so ChatGPT calls its image generation tool when users want an image.
0.69

OpenAI's^[1][2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.

Start: Nov 30, 202675% CONFIDENCEfrom the source

OpenAI Retires Evals Platform

OpenAI switches off Evals platform on 30 November 2026; requests to them stop working and callers have to move to the named replacements.

"On June 3, 2026, we notified developers using the Evals platform that the product is being deprecated"^[1]
The shutdown comes in two steps: on Oct 31, 2026 "Existing evals become read-only", and on Nov 30, 2026 "The Evals dashboard and API are scheduled to shut down"^[1]
"Graders documented for eval workflows are part of this transition. Fine-tuning-related timelines remain covered in the self-serve fine-tuning section"^[1]
The page points to "Moving from OpenAI Evals to Promptfoo" as a migration path^[1]
Two other products announced the same day, 3 June 2026, share the 30 November 2026 shutdown: reusable prompts (the v1/prompts API) and Agent Builder^[1]

@TechDesk

References 280% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]75%
platform.openai.com/docs/deprecations#2026-06-03-evals-platform
platform.openai.com· Posted Sep 20, 2026· Starts Nov 30, 2026 ✓· 50% of score
OpenAI's^[2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
[2]85%
OpenAI deprecations
platform.openai.com· Added Sep 20, 2026· 50% of score
OpenAI's^[1] full deprecation index, which lists every announcement and the notice period each model gets; this pin's own section is its source.

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1OpenAI Retires Evals Platform

AI09/20/2026@TechDesk
OpenAI Retires Reusable Prompts
OpenAISan Francisco, California, United States
Starts 11/30/2026SCHEDULED 80% CONFIDENCEin 68 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off Reusable prompts on 30 November 2026; requests to them stop working and callers have to move to the named replacements.
0.77
AI09/20/2026@TechDesk
OpenAI Retires Agent Builder
OpenAISan Francisco, California, United States
Starts 11/30/2026SCHEDULED 80% CONFIDENCEin 68 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-03, gives the shutdown date as 30 November 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off Agent Builder on 30 November 2026; requests to them stop working and callers have to move to the named replacements.
0.74
AI09/20/2026@TechDesk
OpenAI Retires GPT-5.4-Cyber
OpenAISan Francisco, California, United States
Starts 10/01/2026SCHEDULED 80% CONFIDENCEin 8 daysOpenAI's^[1][2] own deprecation page, announced 2026-09-11, gives the shutdown date as 1 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off GPT-5.4-Cyber on 1 October 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-5.4-cyber.
0.73
AI09/19/2026@TechDesk
GPT-4o Update Rolled Back Over Sycophancy
OpenAI
Starts 04/29/2025 CONFIRMED 89% CONFIDENCE1.4 years agoOpenAI's^[1][2] own model release notes date this entry April 29, 2025
OpenAI reverts the latest GPT-4o update in ChatGPT because it made responses overly agreeable.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 4 Transcription Models
OpenAISan Francisco, California, United States
Starts 02/26/2027SCHEDULED 80% CONFIDENCEin 156 daysOpenAI's^[1][2] own deprecation page, announced 2026-08-26, gives the shutdown date as 26 February 2027. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 4 models and endpoints on 26 February 2027; requests to them stop working and callers have to move to the named replacements. Going: whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 6 GPT-5 and o3 Models
OpenAISan Francisco, California, United States
Starts 12/11/2026SCHEDULED 80% CONFIDENCEin 79 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-11, gives the shutdown date as 11 December 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 6 models and endpoints on 11 December 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-5-2025-08-07, gpt-5-mini-2025-08-07, gpt-5-nano-2025-08-07, gpt-5-pro-2025-10-06, o3-2025-04-16, o3-pro-2025-06-10.
0.71
AI09/20/2026@TechDesk
OpenAI Retires 4 Legacy GPT Model Snapshots
OpenAISan Francisco, California, United States
Starts 09/28/2026SCHEDULED 80% CONFIDENCEin 5 daysOpenAI's^[1][2] own deprecation page, announced 2025-09-26, gives the shutdown date as 28 September 2026 (re-checked 2026-09-23, unchanged). A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 4 models and endpoints on 28 September 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-3.5-turbo-instruct, babbage-002, davinci-002, gpt-3.5-turbo-1106.
0.71
AI09/20/2026@TechDesk
OpenAI Retires 17 Legacy GPT Model Snapshots
OpenAISan Francisco, California, United States
Starts 10/23/2026SCHEDULED 80% CONFIDENCEin 30 daysOpenAI's^[1][2] own deprecation page, announced 2026-04-22, gives the shutdown date as 23 October 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 17 models and endpoints on 23 October 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-3.5-turbo-0125, gpt-4-0613, gpt-4-1106-preview, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, gpt-image-1, o1-2024-12-17, o1-pro-2025-03-19, o3-mini-2025-01-31, ft-o4-mini-2025-04-16, o4-mini-2025-04-16 and 5 more.
0.71
AI09/19/2026@TechDesk
OpenAI o3-mini Released
OpenAI
Starts 01/31/2025 CONFIRMED 92% CONFIDENCE1.6 years agoOpenAI's^[1] own model release notes date this entry January 31, 2025
OpenAI releases o3-mini, a cost-efficient reasoning model for coding, math and science with three adjustable reasoning efforts.
0.70
AI09/20/2026@TechDesk
OpenAI Retires 3 GPT Image Models
OpenAISan Francisco, California, United States
Starts 12/01/2026SCHEDULED 80% CONFIDENCEin 69 daysOpenAI's^[1][2] own deprecation page, announced 2026-06-02, gives the shutdown date as 1 December 2026. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 3 models and endpoints on 1 December 2026; requests to them stop working and callers have to move to the named replacements. Going: gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest.
0.70
AI09/19/2026@TechDesk
GPT-4o Update Improves Coding and Instruction Following
OpenAI
Starts 03/27/2025 CONFIRMED 95% CONFIDENCE1.5 years agoOpenAI's^[1] own model release notes date this entry March 27, 2025
OpenAI updates GPT-4o to feel more intuitive and collaborative, with cleaner frontend code, better instruction following and clearer communication.
0.69
AI09/19/2026@TechDesk
GPT-4o Update Improves Image Tool Calling
OpenAI
Starts 05/12/2025 CONFIRMED 95% CONFIDENCE1.4 years agoOpenAI's^[1] own model release notes date this entry May 12, 2025
OpenAI improves GPT-4o's system instructions so ChatGPT calls its image generation tool when users want an image.
0.69

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