OpenAI Slashes GPT-5.6 Sol API Prices by 50%
GPT-5.6 Sol Pricing Cut by 50%
OpenRouter now lists GPT-5.6 Sol, OpenAI's flagship model, with a 50% price cut on API access. Input costs drop to $2.50 per million tokens, and output to $15, with cache reads at $0.25. The model, released July 9, 2026, features a 1M context window and excels in complex reasoning, coding, and agentic workflows. Performance benchmarks show strong results on GPQA Diamond and TAU-Bench, with top uptime across providers.
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series, 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.