OpenAI Cut GPT-5.6 Sol to $4/$20 Per Million Tokens, a 20% Input and 33% Output Reduction Held Through November 21
OpenAI Developer Docs / Reuters·high signal
OpenAI's model docs now list GPT-5.6 Sol at $4 per million input tokens, $20 per million output, and $0.40 cached input, described as a 20% input and 33% output cut, with the promotional pricing committed at least through November 21, 2026. The model carries a 1,050,000-token context window with a 922,000-token input maximum. The catch builders should price in: requests exceeding 272K input tokens are billed at 2x input and 1.5x output for the entire request, so long-context agent loops do not get the headline rate. Reuters covered the cut the same day.