OpenAI releases GPT-5.6, dethroning Claude Mythos 5
openai released the gpt-5.6 'sol' model after a delay enforced by the u.s. government. the model costs $5/$30 per million tokens and beats anthropic's claude mythos 5 on coding benchmarks.
openai released gpt-5.6 'sol' models thursday after the department of commerce approved public access, lifting restrictions previously placed on the initial partner-only rollout. the 'sol ultra' model achieved 91.9% on terminalbench 2.1, surpassing google's gemini 3.1 pro preview at 70.7% and claude mythos 5 at 88.0%, while matching claude on security tasks using significantly fewer tokens. priced at $5/$30 per million input/output tokens, gpt-5.6 is nearly half the cost of its competitors, setting a new price-to-performance standard for the market. the company criticized the regulatory hold, noting that binding standards for ai releases remain absent despite the latest executive orders.