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GPT-5.6 Sol
The top model in OpenAI's GPT-5.6 lineup
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See available modelsAbout the model
GPT-5.6 Sol is the top variant in the GPT-5.6 lineup from OpenAI for the most complex and high-stakes tasks. It has the deepest step-by-step reasoning in the series and is strong in code, fine-grained analytics and multi-stage scenarios where accuracy matters. The model understands images, holds a huge context and reliably runs agent scenarios with tool calling (function-calling). OpenAI calls Sol the highest-quality model in the lineup: it handles large, tangled tasks better than the other variants. Its Russian is confident.
Strengths
- The deepest reasoning in the GPT-5.6 lineup
- Strong with code, architecture and analytics
- Huge context
- Works with images and visual context
- Reliable coordination of agents and tools
Where to use it
- Complex analytics and research
- Architecture design and algorithm analysis
- In-depth development and code review
- Autonomous agents and multi-step planning
- Working with huge materials and data
- Tasks where accuracy is critical