OpenAI o1, o1-pro, o3-mini and o4-mini (including ft-o4-mini): sunset date 2026-10-23
The sunset date for OpenAI o1, o1-pro, o3-mini and o4-mini is 2026-10-23, which is 13 days after 2026-10-10, the date this data was compiled.
- Provider
- OpenAI
- Category
- ai-model
- Sunset date
- 2026-10-23 (13 days remaining as of 2026-10-10)
- What stops working
- Requests to o1, o1-pro, o3-mini and o4-mini model IDs, and fine-tuned o4-mini models, fail after the shutdown date.
- Replacement
- gpt-5.6-sol (gpt-5.6-terra for o4-mini)
Source
OpenAI API deprecations, developers.openai.com (printed as text, not linked). Read on 2026-10-10. Confirm the date on that page before acting.
Related sunsets
- OpenAI GPT-4 family (2026-10-23)
- OpenAI gpt-3.5-turbo and gpt-4.1-nano (2026-10-23)
- OpenAI gpt-5 and o3 snapshots (2026-12-11)