OpenAI · Model retirement
o1-pro
Stops working (tomorrow)
On October 23, 2026, the model o1-pro will be retired. Calls targeting model o1-pro will fail after that day. Plan your transitions before the shutdown takes effect.
What to use instead of o1-pro
Move to gpt-5.6-sol (reasoning.mode: pro), which is recommended by OpenAI.
Facts
- API
- OpenAI
api.openai.com - Model
o1-pro- Kind
- Model retirement
- Takes effect
- October 23, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
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