The Ledger · calendar
AI Sunset Calendar
When is it actually getting killed? A date-sorted calendar of every model, endpoint, and API on the ledger with a vendor-announced retirement or shutdown date — logged with the exact source wording, and graded HIT or MISS on the day by checking whether it was really removed. 10 scheduled, 0 past their date. Rebuilt daily. The full ledger →
Next shutdown in
33days
"OpenAI to shut down gpt-5-chat-latest and o3-deep-research in the API on July 23, 2026"
"OpenAI"shuts down 2026-07-23 · Jul 23, 2026
Scheduled — counting down 10
23Jul 2026
resolves in 33d"OpenAI"
"OpenAI to shut down gpt-5-chat-latest and o3-deep-research in the API on July 23, 2026"
“"Shutdown on July 23, 2026"”
24Jul 2026
resolves in 34d"DeepSeek"
"DeepSeek to retire deepseek-chat and deepseek-reasoner endpoints on July 24, 2026"
“"Both legacy names retire July 24, 2026. After that date, requests using the old names will fail."”
5Aug 2026
openin 46 days"Anthropic"
"Anthropic to retire Claude Opus 4.1 on the Claude API on August 5, 2026"
“"On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API."”
23Aug 2026
openin 64 days"Google Cloud (Vertex AI) / Anthropic"
"Claude 3 Haiku to be shut down on Vertex AI on August 23, 2026"
“"Claude 3 Haiku is deprecated as of February 23, 2026 and will be shut down on August 23, 2026."”
26Aug 2026
openin 67 days"OpenAI"
"OpenAI o3 retired from ChatGPT on Aug 26, 2026"
“"OpenAI o3 will enter a 90-day transition period and be retired on August 26, 2026."”
26Aug 2026
openin 67 days"OpenAI"
"OpenAI to remove the Assistants API on August 26, 2026"
“"On August 26th, 2025, OpenAI notified developers using the Assistants API of its deprecation and removal from the API one year later, on August 26, 2026."”
24Sep 2026
openin 96 days"OpenAI"
"Sora API to be shut down on Sept 24, 2026"
“"the API is planned to be shut down on September 24, 2026."”
24Sep 2026
openin 96 days"OpenAI (Sora shutdown schedule, via GLBGPT)"
"Sora API and app services shut down on September 24, 2026"
“"September 24, 2026: The Final Deadline for API and App Services"”
24Sep 2026
openin 96 days"OpenAI"
"OpenAI to shut down Sora 2 and the Videos API on Sept 24, 2026"
“"On March 24, 2026, OpenAI officially announced via a developer notification that the Sora-2 API sunset date is set for September 24, 2026."”
16Oct 2026
openin 118 days"Google (Gemini API)"
"Gemini 2.5 Flash scheduled for shutdown Oct 16, 2026"
“"| `gemini-2.5-flash` | June 17, 2025 | October 16, 2026 | `gemini-3.5-flash` |"”