Claude Opus 5.5 (High) hits #2 on Agent Arena and reshapes the Pareto frontier

Claude Opus 5.5 (High) 在 Agent Arena 排名第 2 并重塑 Pareto 前沿

Anthropic's Claude Opus 5.5 (High) landed at #2 on Agent Arena with a +12.15% net improvement, behind only Fable 5.1 (Max). Median cost is $1.31 per task—40% cheaper than Opus 5 (High) and 56% cheaper than Opus 5 (Max). It ranked #1 on Steerability at +14.50%. The post doesn't disclose a release date or other model comparisons.

Why it matters: Anthropic model hitting #2 on Agent Arena with a significant price drop is a same-day must-write product signal. The +12.15% net improvement and $1.31 median cost provide hard data, and steerability gains are a bonus. Not scoring higher because this is still a benchmark — real...