GPT-5.6
OpenAI · July 2026
● activeClosedmixture of expertsmultimodal
VariantsSol, Terra, Luna
Why It Matters
First frontier model subjected to rigorous US government review prior to launch. Reestablished OpenAI's position at the edge of the cost-performance curve.
Description
OpenAI's frontier model family (Sol, Terra, Luna) offering significant improvements. First model to undergo customer-by-customer US government review before launch.
Key Innovations
Agentic
AgenticModels that can autonomously plan, execute multi-step tasks, use tools, and self-correct without human intervention.
Reasoning
ReasoningStructured step-by-step problem solving, often using chain-of-thought or tree-of-thought approaches.
Family Tree
Built On
Related Research (1)
Ten Advances in Mathematics and Theoretical Computer ScienceReasoning
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