GPT-5.6 Sol

GPT-5.6 Sol is an OpenAI model positioned in the upper tier of its product line, trailing behind competitors on several recent benchmarks. In July 2026, Moonshot AI's Kimi K3 edged it out across multiple leaderboards: K3 scored 34.8% to GPT-5.6 Sol's 32.4% on one coding benchmark, and on the Mega suite for parallel processing, GPT-5.6 Sol managed only a 2.64× speedup against K3's 18.09×. In Arena AI's Code Arena, GPT-5.6 Sol scored 1618, below both K3's 1679 and Claude Fable 5's 1631. On a 38-model ranking, it placed third at 74.70%, again behind K3 and Fable 5.

elsewhere's corpus does not cover GPT-5.6 Sol's release date, parameter count, or positioning within OpenAI's broader roadmap. The only other OpenAI product details in the bundle concern GPT-5 (August 2025), which 十字路口Crossing described as capable of generating full applications from minimal prompts and topping a health-benchmark test, and the earlier GPT-4.1 series.