Claude Opus 5.5 (High) hits #2 on Agent Arena, undercuts peers by 64% on cost

Claude Opus 5.5 (High) 在 Agent Arena 排名第二并重塑 Pareto 前沿

Claude Opus 5.5 (High) landed #2 on Agent Arena with a +12.15% net gain, behind only Claude Fable 5.1 (Max). Median cost per task is $1.31—64% cheaper than peers at the same tier, 40% below Opus 5 (High), and 56% below Opus 5 (Max). It ranked #1 on Steerability at +14.50%. The post doesn't break down task mix or latency.

Why it matters: Claude Opus 5.5 takes #2 on Agent Arena while driving median cost down to $1.31 — 64% cheaper than same-tier peers. Anthropic model update + hard numbers + directly comparable benchmarks, all three HKR axes hit. Not 90+ yet because it's a single benchmark source; will bump whe...