https://tokencost.app/blog/gemini-4-argon-pricing TokenCost en 2026-10-01T00:00:00.000Z Gemini 4 Argon launches on GPT-6.1 Sol's rate card and is scheduled to move to Claude Opus 5.5's. On Artificial Analysis, Opus 5.5 at high effort already scores higher than Argon for less than Argon's introductory price. 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.