o1-preview
retired Retired
o1-preview is a retired OpenAI LLM API model. and shut down on Jul 28, 2025. Migrate any code that still calls o1-preview to openai/o3.
Recommended action: migrate to
openai/o3.
Lifecycle & specs
- Provider
- OpenAI
- API model ID
o1-preview- Status
- retired
- Released
- Sep 12, 2024
- Deprecated
- Apr 28, 2025
- Retirement date
- Jul 28, 2025
- Replacement
openai/o3- Context window
- 128,000 tokens
Source: official OpenAI documentation ↗ · ✓ verified