# When is o1-mini retired?

o1-mini on OpenAI was retired on Oct 27, 2025.

OpenAI recommends migrating to o4-mini.

> Warning: the replacement o4-mini is retired (shutdown 2026-10-23). Deepest tracked model in the chain: o4-mini (retired).

- Provider: OpenAI
- Model ID: o1-mini
- Status: retired
- Deprecation announced: 2025-04-28
- Shutdown date: 2025-10-27
- Replacement: o4-mini
- Replacement status: retired
- Replacement kind: same_family
- End of replacement chain: o4-mini (retired, openai)
- Official source: https://developers.openai.com/api/docs/deprecations
- Last checked: 2026-11-06T05:52:31+00:00
- Check status: verified
- Provider coverage today: https://aideprecations.com/api/v1/coverage.json
- Page: https://aideprecations.com/openai/o1-mini/

Cite as: AI Deprecations, "o1-mini deprecation date", https://aideprecations.com/openai/o1-mini/ (source: https://developers.openai.com/api/docs/deprecations). Data CC BY 4.0. Always confirm on the official source.