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Claude Opus 5.5 lands on Arena's Agent Arena and Battle Mode
1 report1 sourceupdated 7 days ago
What happened
Summary
Arena 把 Claude Opus 5.5 放上了 Agent Arena，让模型直接干长链条的活——可以自己上网搜资料、读写文件、敲命令行。排行榜不只看输赢，用的是因果追踪，看它比平均水平强多少。正文没具体说 Battle Mode 怎么打，也没给任务例子，所以实际有多能打还得等实测。
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Sep 23
- AI HOT (Curated Pool)PickClaude Opus 5.5 lands on Arena's Agent Arena and Battle Mode
Anthropic's Claude Opus 5.5 is now available on Arena's Agent Arena, where users vote on rankings after the model runs real long-horizon agent tasks. The model can use web search, a file system, and a terminal; the leaderboard uses causal tracking to measure performance relative to the average model. The post doesn't spell out Battle Mode specifics or show example tasks.