o1 Pro
by OpenAI
Premium reasoning model applying maximum compute for deeper thinking and most consistent results. Built for the highest reliability standards with extensive reasoning time, designed for mission-critical applications requiring ultimate accuracy.
- Maximum compute application using extensive resources for deepest possible reasoning
- Ultimate reliability standard designed for mission-critical applications requiring highest accuracy
- Extended thinking time providing the most thorough analysis and consistent results
- Premium problem-solving capability excelling on the most challenging mathematical and scientific problems
- Highest-tier performance representing the peak of OpenAI's reasoning model capabilities
Model Information
Supported Formats
GPT 5.6 SolGPT-5.6 Sol is OpenAI's flagship model in the GPT-5.6 family, released July 9, 2026, for the most complex professional work spanning software engineering, long-horizon research, agentic tool use, and careful result refinement.
GPT 5.6 TerraGPT-5.6 Terra balances capability and cost efficiency for everyday production workloads in the GPT-5.6 family, released July 9, 2026.
GPT 5.6 LunaGPT-5.6 Luna is the fastest, most cost-optimized model in the GPT-5.6 family, released July 9, 2026, built for high-volume and latency-sensitive workloads.