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

Starts 02/26/2027

AI09/20/2026@TechDesk
OpenAI Retires 9 Legacy Audio, Realtime, and Transcription Models
OpenAISan Francisco, California, United States
Starts 01/20/2027SCHEDULED 80% CONFIDENCEin 119 daysOpenAI's^[1][2] own deprecation page, announced 2026-07-20, gives the shutdown date as 20 January 2027. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 9 models and endpoints on 20 January 2027; requests to them stop working and callers have to move to the named replacements. Going: gpt-realtime, gpt-audio, gpt-4o-audio, gpt-4o-realtime, gpt-realtime-mini, gpt-audio-mini, gpt-4o-mini-realtime, gpt-4o-mini-audio, gpt-4o-mini-transcribe-2025-03-20.
0.80
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.
0.78
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.
0.76
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.
0.76
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.
0.76
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.
0.75
AI09/19/2026@TechDesk
OpenAI o3 and o4-mini Released
OpenAI
Starts 04/16/2025 CONFIRMED 88% CONFIDENCE1.4 years agoOpenAI's^[1] own model release notes date this entry April 16, 2025
OpenAI releases o3, its most powerful reasoning model, and o4-mini, a smaller model optimized for fast, cost-efficient reasoning.
0.75
AI09/19/2026@TechDesk
OpenAI Releases Open-Weight gpt-oss-120b and gpt-oss-20b
OpenAI
Starts 08/05/2025 CONFIRMED 88% CONFIDENCE1.1 years agoOpenAI's^[1][2] own model release notes date this entry August 5, 2025
OpenAI releases two open-weight reasoning models, gpt-oss-120b and gpt-oss-20b, for teams that want to run and customize models themselves.
0.74
AI09/19/2026@TechDesk
GPT-4.5 Released as a Research Preview
OpenAI
Starts 02/27/2025 CONFIRMED 87% CONFIDENCE1.6 years agoOpenAI's^[1] own model release notes date this entry February, 27, 2025
OpenAI releases a research preview of GPT-4.5, its largest and best model for chat, scaling up unsupervised learning rather than reasoning.
0.73
AI09/19/2026@TechDesk
GPT-5.3-Codex Released
OpenAI
Starts 02/05/2026 CONFIRMED 90% CONFIDENCE230 days agoOpenAI's^[1][2][3] own model release notes date this entry February 5, 2026
OpenAI launches GPT-5.3-Codex, its most capable agentic coding model, the first to combine the Codex and GPT-5 training stacks.
0.72
AI09/19/2026@TechDesk
GPT-4.1 mini Replaces GPT-4o mini in ChatGPT
OpenAI
Starts 05/14/2025 CONFIRMED 88% CONFIDENCE1.4 years agoOpenAI's^[1][2] own model release notes date this entry May 14, 2025
OpenAI replaces GPT-4o mini with GPT-4.1 mini in ChatGPT, improving instruction following, coding and overall intelligence for its small model.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 6 Sora 2 Video Generation Models and Videos API
OpenAISan Francisco, California, United States
Starts 09/24/2026SCHEDULED 80% CONFIDENCEin 1 dayOpenAI's^[1][2] own deprecation page, announced 2026-03-24, gives the shutdown date as 24 September 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 24 September 2026; requests to them stop working and callers have to move to the named replacements. Going: Videos API, sora-2, sora-2-pro, sora-2-2025-10-06, sora-2-2025-12-08, sora-2-pro-2025-10-06.
0.72

OpenAI'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.

Start: Feb 26, 202775% CONFIDENCEfrom the source

OpenAI Retires 4 Transcription Models

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.

"On August 26, 2026, we notified developers using whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, and gpt-4o-transcribe-diarize of their deprecation and removal from the API on February 26, 2027"^[1]
All four transcription models carry the same recommended replacement: gpt-live-transcribe or gpt-transcribe^[1]
"For information about the recommended replacements, see the transcription guide"^[1]
This is the furthest-out shutdown on the page's list of upcoming deprecations^[1]
Under the page's policy, "When we announce that a model or endpoint is being deprecated, it immediately becomes deprecated. All deprecated models and endpoints will also have a shut down date"; generally available models get at least 6 months' notice, which the August-to-February gap here matches, and "In some cases, developers may be able to provision dedicated capacity for continued access after a model's shutdown date"^[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#2026-08-26-transcription-models
platform.openai.com· Posted Sep 20, 2026· Starts Feb 26, 2027 ✓· 50% of score
OpenAI's^[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.
[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 4 Transcription Models

AI09/20/2026@TechDesk
OpenAI Retires 9 Legacy Audio, Realtime, and Transcription Models
OpenAISan Francisco, California, United States
Starts 01/20/2027SCHEDULED 80% CONFIDENCEin 119 daysOpenAI's^[1][2] own deprecation page, announced 2026-07-20, gives the shutdown date as 20 January 2027. A shutdown date is the vendor's commitment to developers and is occasionally pushed back, never brought forward.
OpenAI switches off 9 models and endpoints on 20 January 2027; requests to them stop working and callers have to move to the named replacements. Going: gpt-realtime, gpt-audio, gpt-4o-audio, gpt-4o-realtime, gpt-realtime-mini, gpt-audio-mini, gpt-4o-mini-realtime, gpt-4o-mini-audio, gpt-4o-mini-transcribe-2025-03-20.
0.80
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.
0.78
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.
0.76
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.
0.76
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.
0.76
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.
0.75
AI09/19/2026@TechDesk
OpenAI o3 and o4-mini Released
OpenAI
Starts 04/16/2025 CONFIRMED 88% CONFIDENCE1.4 years agoOpenAI's^[1] own model release notes date this entry April 16, 2025
OpenAI releases o3, its most powerful reasoning model, and o4-mini, a smaller model optimized for fast, cost-efficient reasoning.
0.75
AI09/19/2026@TechDesk
OpenAI Releases Open-Weight gpt-oss-120b and gpt-oss-20b
OpenAI
Starts 08/05/2025 CONFIRMED 88% CONFIDENCE1.1 years agoOpenAI's^[1][2] own model release notes date this entry August 5, 2025
OpenAI releases two open-weight reasoning models, gpt-oss-120b and gpt-oss-20b, for teams that want to run and customize models themselves.
0.74
AI09/19/2026@TechDesk
GPT-4.5 Released as a Research Preview
OpenAI
Starts 02/27/2025 CONFIRMED 87% CONFIDENCE1.6 years agoOpenAI's^[1] own model release notes date this entry February, 27, 2025
OpenAI releases a research preview of GPT-4.5, its largest and best model for chat, scaling up unsupervised learning rather than reasoning.
0.73
AI09/19/2026@TechDesk
GPT-5.3-Codex Released
OpenAI
Starts 02/05/2026 CONFIRMED 90% CONFIDENCE230 days agoOpenAI's^[1][2][3] own model release notes date this entry February 5, 2026
OpenAI launches GPT-5.3-Codex, its most capable agentic coding model, the first to combine the Codex and GPT-5 training stacks.
0.72
AI09/19/2026@TechDesk
GPT-4.1 mini Replaces GPT-4o mini in ChatGPT
OpenAI
Starts 05/14/2025 CONFIRMED 88% CONFIDENCE1.4 years agoOpenAI's^[1][2] own model release notes date this entry May 14, 2025
OpenAI replaces GPT-4o mini with GPT-4.1 mini in ChatGPT, improving instruction following, coding and overall intelligence for its small model.
0.72
AI09/20/2026@TechDesk
OpenAI Retires 6 Sora 2 Video Generation Models and Videos API
OpenAISan Francisco, California, United States
Starts 09/24/2026SCHEDULED 80% CONFIDENCEin 1 dayOpenAI's^[1][2] own deprecation page, announced 2026-03-24, gives the shutdown date as 24 September 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 24 September 2026; requests to them stop working and callers have to move to the named replacements. Going: Videos API, sora-2, sora-2-pro, sora-2-2025-10-06, sora-2-2025-12-08, sora-2-pro-2025-10-06.
0.72

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