OpenAI
openai.com · AI · watching since Aug 17, 2026 · RSS
Current state
As of Aug 28, 2026This is OpenAI's API Deprecations page, listing upcoming and past model/endpoint retirements with recommended replacements. Fetched 2026-08-28, it shows deprecation notices ranging from legacy GPT-3 era models (2023) through recent 2026 announcements affecting GPT-5, o3, realtime/audio, Sora 2, and reusable prompts. OpenAI states generally available models get at least 6 months notice, specialized variants at least 3 months, and preview models as little as 2 weeks.
Deprecations
- Sunset 2027-01-20
gpt-realtime, gpt-4o-realtime, gpt-realtime-mini, gpt-4o-mini-realtime model families
→ gpt-realtime-2.1 / gpt-realtime-2.1-mini
- Sunset 2027-01-20
gpt-audio, gpt-4o-audio, gpt-audio-mini, gpt-4o-mini-audio model families
→ gpt-audio-1.5
- Sunset 2027-01-20
gpt-4o-mini-transcribe-2025-03-20
→ gpt-4o-mini-transcribe-2025-12-15
- Sunset 2026-12-11
gpt-5-2025-08-07, o3-2025-04-16
→ gpt-5.6-sol
- Sunset 2026-12-11
gpt-5-mini-2025-08-07
→ gpt-5.6-terra
- Sunset 2026-12-11
gpt-5-nano-2025-08-07
→ gpt-5.6-luna
- Sunset 2026-11-30
Reusable prompt objects (v1/prompts API)
- Sunset 2026-09-24
Videos API, sora-2, sora-2-pro and snapshots
- Sunset 2026-09-28
gpt-3.5-turbo-instruct, babbage-002, davinci-002, gpt-3.5-turbo-1106
→ gpt-5.6-terra
- Sunset 2026-08-10
gpt-5.2-chat-latest, gpt-5.3-chat-latest
→ gpt-5.6-sol
- Sunset 2026-08-26
Assistants API
→ Responses API and Conversations API
- Sunset 2026-02-17
chatgpt-4o-latest
→ gpt-5.1-chat-latest
Latest entries
- Legacy audio, realtime, and transcription models deprecateddeprecation
- GPT-5 and o3 model deprecations announceddeprecation
- Reusable prompts deprecateddeprecation
- Gpt-5.2-chat-latest and gpt-5.3-chat-latest model snapshots deprecateddeprecation
- Legacy GPT model snapshots deprecated ahead of July 2026 shutdowndeprecation
- Sora 2 video generation models and Videos API deprecateddeprecation
- Chatgpt-4o-latest snapshot deprecateddeprecation
- Codex-mini-latest model snapshot deprecateddeprecation
- Dall-e model snapshots deprecateddeprecation
- Legacy GPT model snapshots deprecateddeprecation
- Realtime API beta deprecateddeprecation
- Gpt-4o-realtime-preview models deprecateddeprecation
Changes
- ChangeAPI changelog
OpenAI API documentation shows multiple breaking changes: deprecation of four transcription models (whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize) with removal February 26, 2027; new API features (Mid-turn steering, Async tool calling, Safety classifiers, Misalignment monitoring); GPT version change from 5.6 to 6 Astra; reorganized documentation structure; and clarified Assistants API deprecation timeline.
* Using GPT-5.6 * Key concepts CORE CONCEPTS * Conversation state * Background mode * Streaming * WebSocket mode * Multi-agent* Using GPT-6 Astra * Key concepts CORE CONCEPTS * Conversation state * Background mode * Streaming * WebSocket mode * Mid-turn steering * Multi-agentConfidence95% - ChangeAPI changelog
Added new documentation sections for ChatGPT Work local security, usage and cost features; added Plugin management and Admin plugin sections; added Life sciences topic; reordered recent blog posts with one removal.
* ChatGPT Work cloud security * ChatGPT Work admin FAQ IDENTITY AND AUTHENTICATION* ChatGPT Work cloud security * ChatGPT Work local security * ChatGPT Work admin FAQ * ChatGPT Work: usage and cost IDENTITY AND AUTHENTICATIONConfidence40% - ChangeAPI changelog
Assistants API deprecation moved from current deprecations to past deprecations section; status updated from announced deprecation to completed sunset on August 26, 2026.
2025-08-20: ASSISTANTS API On August 26th, 2025, we notified developers using the Assistants API of its deprecation and removal from the API one year later, on August 26, 2026. When we released the Responses API in March 2025, we announced plans to bring all Assistants API features to the easier to use Responses API, with a sunset date in 2026. See the Assistants to Conversations migration guide to learn more about how to migrate your current integration to the Responses API and Conversations API. Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations API2025-08-20: ASSISTANTS API The Assistants API was officially sunset on August 26, 2026, following its deprecation announcement on August 26, 2025. When we released the Responses API in March 2025, we announced plans to bring all Assistants API features to the easier to use Responses API, with a sunset date in 2026. See the Assistants to Conversations migration guide to learn more about how to migrate your current integration to the Responses API and Conversations API. Shutdown dateModel / systemRecommended replacement2026‑08‑26Assistants APIResponses API and Conversations APIConfidence95% - ChangeAPI changelog
New 'Image input cost calculator' feature added to Images and vision section.
IMAGES AND VIDEO * Images and vision * Image generationIMAGES AND VIDEO * Images and vision * Image input cost calculator * Image generationConfidence30% - ChangeAPI changelog
OpenAI documentation updated with new features (Site tools/WebMCP, GitLab CI/CD support) and reordered blog posts; Chrome extension renamed to Browser extension.
* Chrome extension * Work with files REFERENCE ... * Build skills * Build plugins * Hooks ... * Run scans in CI * Reference * FAQ ... * Scaling cyber defenders with Daybreak * Codex as a platform: build on the open agent harness * Custom Code Review rules for Codex * Mastering remote engineering work from your phone * Making private MCP servers reachable without making them public* Browser extension * Work with files REFERENCE ... * Build skills * Build plugins * Site tools (WebMCP) * Hooks ... * Run scans in CI * GitLab CI/CD * Reference * FAQ ... * Automating repetitive work at OpenAI with Codex * Meet the winners of OpenAI Build Week * Scaling cyber defenders with Daybreak * Codex as a platform: build on the open agent harness * Custom Code Review rules for CodexConfidence85% - ChangeAPI changelog
Added 'Mutual TLS' to Private Link section and removed '(beta)' tag from 'X.509 certificates'; added 'ChatGPT Work cloud security' documentation page.
* Private Link * IP allowlist * Workload identity federation * Codex setup * Federation rules * Admin API * X.509 certificates (beta)* Private Link * IP allowlist * Mutual TLS * Workload identity federation * Codex setup * Federation rules * Admin API * X.509 certificatesConfidence70% - ChangeAPI changelog
Added 'Custom Audiences' to API features list and reordered recent blog posts.
* Conversion-Optimized Campaigns API REFERENCE* Conversion-Optimized Campaigns * Custom Audiences API REFERENCEConfidence60%
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