OpenAI · model
o1-mini deprecation: shutdown date & replacement
Shut down October 27, 2025
- Provider
- OpenAI
- Type
- model
- Announced
- Shutdown
- Replacement
o4-mini- Source
- Official OpenAI notice
How to migrate off o1-mini
- Find every place that references it:
grep -rn --exclude-dir={node_modules,.git,dist} "o1-mini" . - Replace the model ID:
- model: "o1-mini" + model: "o4-mini" - Re-run your evals or a sample of real prompts — output style, token usage and pricing can change between models.
- Check config outside code too: environment variables, feature flags, prompt-management tools, and fine-tuned model references.
- Deploy before October 27, 2025, and add the CI scanner so it cannot come back.
Also shutting down on October 27, 2025 (OpenAI)
Questions
Is o1-mini deprecated?
Yes. OpenAI has deprecated o1-mini. It was shut down on October 27, 2025.
When does o1-mini shut down?
October 27, 2025, according to OpenAI's official deprecation notice.
What should I use instead of o1-mini?
OpenAI recommends o4-mini. Switch the model ID and re-test your prompts, since outputs, pricing and limits can differ.
What happens to requests to o1-mini after the shutdown?
Requests using the retired model ID fail with an error, so any code still calling it breaks. Update and deploy before the shutdown date.