MODEL SIGNAL · OPENAI
GPT-5.6 Sol
GPT-5.6 Sol is OpenAI's flagship frontier model in the 5.6 series, optimized for complex reasoning, multi-step coding, and agentic workflows.
CATEGORYMultimodal
CONTEXT1050000
RELEASEDJune 26, 2026
Key Features
- Native multimodal input
- Designed for complex reasoning
- Built for multi-step coding and agentic workflows
Read the Model Signal report →
The designed Model Signal report for GPT-5.6 Sol is still in review. It will publish here after the fact and quality gates clear.