OpenAI’s o1 models are positioned for complex reasoning tasks, with OpenAI describing internal chain-of-thought style deliberation before producing answers. Exact product availability varies by ChatGPT tier and API access.
AI Model Intelligence
OpenAI o1
OpenAI · o-series family · Text (product/API surfaces as documented by OpenAI)
Intelligence Summary
Model- Model intelligence
- Developer OpenAI
- Family o-series
- Modalities Text (product/API surfaces as documented by OpenAI)
- API API availability documented on OpenAI Models pages when offered.
- Licensing Proprietary product/API access under OpenAI terms.
- Deployment OpenAI-hosted ChatGPT and API (where enabled).
- Documentation Official docs
- Last reviewed Jul 2026
All AI Models → · Official docs →
Editorial overview
Capabilities
- Multi-step reasoning and problem solving as described by OpenAI
- STEM and coding-oriented evaluations highlighted in OpenAI announcements
API availability
API availability documented on OpenAI Models pages when offered.
Deployment options
OpenAI-hosted ChatGPT and API (where enabled).
Limitations
- Higher latency/cost relative to non-reasoning chat models (as described by OpenAI)
- Not all tools/features available on every surface
Related technologies
Related glossary terms
Why it matters
OpenAI o1 is tracked as a first-class model entity on Brel Digital so buyers and researchers can compare developer, modalities, licensing posture, and official documentation without relying on vendor marketing copy.
Last reviewed
Sources
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