GPT-5.6 Sol Pricing Cut by 50% OpenAI cut the price of its GPT-5.6 Sol flagship model by 50%, reducing input cost to $2.50 per 1M tokens and output to $15 per 1M tokens. The model, released on Jul 9, 2026, features a 1M token context window and a knowledge cutoff of Feb 2026, targeting complex reasoning, coding, and agentic workflows. GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks and long-horizon problem solving. Modalities In / Out Price $2.50 / $15per 1M Context 1M Released Jul 9, 2026 Knowledge Cutoff Feb 2026