GPT-6.1 Sol
OpenAI · 2026-09-29
GPT-6.1 Sol is OpenAI's September 29, 2026 reasoning model for coding, computer use, and professional work. It accepts text and image inputs and produces text, with low, medium, high, xhigh, and max reasoning effort. Tool calling uses the Responses API. Its documented total context window is 1,050,000 tokens, with at most 922,000 input tokens and 128,000 output tokens.