# o1-2024-12-17

Calls to the model o1-2024-12-17 on OpenAI stop working on October 23, 2026.

On October 23, 2026, the model o1-2024-12-17 will be retired. Any requests made to model o1-2024-12-17 after this date will fail.

- API: OpenAI (api.openai.com)
- Model: o1-2024-12-17
- Kind: Model retirement
- Takes effect: October 23, 2026
- Calls after that day: fail
- Calls it hits: `model o1-2024-12-17`
- Source: [Deprecations page](https://developers.openai.com/api/docs/deprecations)
- Page: https://www.okapi.bot/models/openai/o1-2024-12-17/

## What to use instead

Move to gpt-5.6-sol, recommended by OpenAI.