What is OpenAI sunsetting, deprecating, or shutting down?

We track 10 things OpenAI has scheduled to be sunset, deprecated, or shut down, spanning 2 categories (API, Browser), each sourced from OpenAI’s own announcement. The soonest still ahead: OpenAI shuts down the Evals dashboard and API on 30 November 2026 (evals go read-only 31 October) (30 Nov 2026); OpenAI removes the older GPT Image models from the API (1 Dec 2026); OpenAI removes the GPT-5 and o3 snapshots gpt-5-2025-08-07, o3-2025-04-16 and o3-pro-2025-06-10 from the API on 11 December 2026 (11 Dec 2026); OpenAI deprecates its legacy audio, realtime, and transcription models (20 Jan 2027); OpenAI deprecates whisper-1 and its gpt-4o-transcribe speech-to-text models (26 Feb 2027). The full, continuously updated list with live countdowns is at https://lastcall.dev/calendar/vendor/openai.

Calendar · By vendor

Everything OpenAI is sunsetting

10 things OpenAI has scheduled to be taken away — soonest first. Each links to OpenAI’s own announcement.

API →27 days

OpenAI OpenAI is retiring its hosted Evals platform: existing evals become read-only on 31 October 2026, and the Evals dashboard and API shut down entirely on 30 November 2026

30 Nov 2026

API →28 days

OpenAI OpenAI is deprecating three GPT Image generation models — gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest — and removing them from the API, directing developers to gpt-image-2

1 Dec 2026

API →38 days

OpenAI OpenAI is removing the dated GPT-5 and o3 model snapshots — 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 and o3-pro-2025-06-10 — from the API on 11 December 2026, directing developers to the gpt-5.6 family

11 Dec 2026

API →11 weeks

OpenAI OpenAI has deprecated a family of older audio, realtime, and speech-to-text API models — including gpt-realtime, gpt-audio, and the gpt-4o audio/realtime line — and will remove them from the API on 20 January 2027

20 Jan 2027

API →16 weeks

OpenAI OpenAI has deprecated its older speech-to-text API models — whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, and gpt-4o-transcribe-diarize — and will remove them from the API on 26 February 2027

26 Feb 2027

Browser ↙gone

OpenAI The standalone ChatGPT Atlas browser stops working; agentic browsing folds into ChatGPT

9 Aug 2026

API ↙gone

OpenAI OpenAI has deprecated the Assistants API and will remove it from the platform on 26 August 2026, directing developers to the newer Responses API

26 Aug 2026

API ↙gone

OpenAI OpenAI is removing its Sora 2 video-generation models and the Videos API from the platform — sora-2, sora-2-pro and their dated snapshots stop responding, with no direct replacement named

24 Sept 2026

API ↙gone

OpenAI OpenAI is removing its gpt-5.4-cyber model from the API on 1 October 2026; anything that calls the model by the identifier gpt-5.4-cyber must switch to the named replacement gpt-5.6-cyber before the shutdown date

1 Oct 2026

API ↙gone

OpenAI OpenAI is removing a large batch of older chat and reasoning models from the API on 23 October 2026 — including gpt-4 (gpt-4-0613), gpt-3.5-turbo, gpt-4-turbo, gpt-4.1-nano, the gpt-4o-2024-05-13 snapshot, o1, o1-pro, o3-mini and o4-mini — directing developers to the gpt-5.6 family

23 Oct 2026

Everything OpenAI is sunsetting

OpenAI OpenAI is retiring its hosted Evals platform: existing evals become read-only on 31 October 2026, and the Evals dashboard and API shut down entirely on 30 November 2026

OpenAI OpenAI is deprecating three GPT Image generation models — gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest — and removing them from the API, directing developers to gpt-image-2

OpenAI OpenAI is removing the dated GPT-5 and o3 model snapshots — 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 and o3-pro-2025-06-10 — from the API on 11 December 2026, directing developers to the gpt-5.6 family

OpenAI OpenAI has deprecated a family of older audio, realtime, and speech-to-text API models — including gpt-realtime, gpt-audio, and the gpt-4o audio/realtime line — and will remove them from the API on 20 January 2027

OpenAI OpenAI has deprecated its older speech-to-text API models — whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, and gpt-4o-transcribe-diarize — and will remove them from the API on 26 February 2027

OpenAI The standalone ChatGPT Atlas browser stops working; agentic browsing folds into ChatGPT

OpenAI OpenAI has deprecated the Assistants API and will remove it from the platform on 26 August 2026, directing developers to the newer Responses API

OpenAI OpenAI is removing its Sora 2 video-generation models and the Videos API from the platform — sora-2, sora-2-pro and their dated snapshots stop responding, with no direct replacement named

OpenAI OpenAI is removing its gpt-5.4-cyber model from the API on 1 October 2026; anything that calls the model by the identifier gpt-5.4-cyber must switch to the named replacement gpt-5.6-cyber before the shutdown date

OpenAI OpenAI is removing a large batch of older chat and reasoning models from the API on 23 October 2026 — including gpt-4 (gpt-4-0613), gpt-3.5-turbo, gpt-4-turbo, gpt-4.1-nano, the gpt-4o-2024-05-13 snapshot, o1, o1-pro, o3-mini and o4-mini — directing developers to the gpt-5.6 family

Other vendors on the board