OpenAI · Model retirement
o1-mini
Stopped working
Calls to the model o1-mini on OpenAI stopped working on October 27, 2025.
What to use instead of o1-mini
Move to gpt-5.6-terra. o4-mini, named first, stops working on 2026-10-23.
Facts
- API
- OpenAI
api.openai.com - Model
o1-mini- Kind
- Model retirement
- Takes effect
- October 27, 2025
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
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