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GPT-5.6 Sol frontier model benchmarks
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OpenAI released GPT-5.6 Sol, a frontier model that demonstrated advanced reasoning capabilities by autonomously constructing a complete Chrome V8 exploit chain from patch commits. The model was benchmarked against competitors including Claude Fable 5 and Kimi K3.
- GPT-5.6 Sol Ultra variant built full Chrome V8 exploit chain from patch commits without external assistance
- Released July 17, 2026
- Benchmarked against Claude Fable 5 and Kimi K3 in comparative evaluation
- Demonstrates advanced code analysis and vulnerability chain construction capabilities