原文
GPT-5.6 Sol costs $4 per million input tokens and $20 per million output tokens, a 20% reduction in input pricing and a 33% reduction in output pricing. GPT-5.6 Sol’s promotional pricing is available at least through November 21, 2026.
Prompts with >272K input tokens are priced at 2x input and 1.5x output for the full request.
Cache writes are billed at 1.25x the uncached input token rate.