https://tokencost.app/blog/gpt-6-1-sol-pricing TokenCost en 2026-09-30T00:00:00.000Z GPT-6.1 Sol changed one number on GPT-6 Sol's rate card, cached input, from $0.20 to $0.10. The bigger cut is in the tokens: on medium it matches GPT-6 Sol's best score for a fifth of the cost per task. https://tokencost.app/blog/claude-sonnet-5-5-pricing TokenCost en 2026-09-29T00:00:00.000Z Claude Sonnet 5.5 kept Sonnet 5's $2 and $10. Of its five effort settings, one is ever the cheapest way to its score, and it is the one the API picks when you leave effort unset.