GPT-6.1 Sol costs $1.91 per task, 85% less than Claude Opus 5.5
arena · x · 2026-10-30
Agent Arena published real-world task cost data showing cost-per-task gaps aren't just about token prices:
- GPT-6.1 Sol (Max) costs $1.91 per task — 85% less than #1 Claude Opus 5.5 (Max) at $12.51, and 87% less than GPT-6 Astra (Max) at $14.93.
- The savings come from different places: vs. Astra, Sol's edge is mainly lower token prices; vs. Opus, it's mainly using fewer tokens per task.
- Methodology: cost per task = tokens used (input, output, cache-read) × price, tracked across real user tasks.
Waterfall charts show token price contributing $5.87 and cache price $5.56 of the reduction vs. Astra, while vs. Opus token usage (-$6.52) dominates.
Related event: GPT-6.1 Sol Costs 85% Less Per Task Than Claude Opus 5.5(2 posts)→
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