🪦 Dead
OpenAI o1-preview
Model deprecation · Model Deprecation · shut down July 28, 2025
- Born
- Died
- Lifespan
- 10m 19d
- Cause of death
- Model Deprecation
- Killed by
- OpenAI
- Type
- Model
OpenAI's first 'reasoning' model that could think step-by-step before answering, achieving PhD-level performance on science benchmarks. The preview version was deprecated in favor of the full o1 and later o3 models as OpenAI rapidly iterated on its reasoning architecture.