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Claude Opus 5.5 成为 Claude Code 与 Claude 应用默认模型
该帖称 Claude Opus 5.5 已成为 Claude Code 和 Claude 应用（包括 Cowork）在 Pro、Max、Team 套餐下的默认模型，默认 effort medium，智能水平接近 Fable 5.1 但更快，速率限制较 Opus 5 多 25%。
AI推荐理由 Anthropic 相关人士称 Claude Opus 5.5 已成为 Claude Code 和 Claude 应用（含 Cowork）在 Pro、Max、Team 套餐下的默认模型，默认 effort medium，速率限制较 Opus 5 多 25%。属于产品默认配置变更的一手信息，对开发者使用有直接影响，但性能对比仍为发布方说法。
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Claude Opus 5.5 is now the default model in Claude Code and the Claude app, including Cowork, for Pro, Max, and Team plans. I’ve been using Opus 5.5 as a daily driver and love its clear communication skills and ability to write in my style.
We’re defaulting to effort medium across products, which is comparable to Fable 5.1 on intelligence but faster. Your rate limits will go 25% further on Opus 5.5 compared to Opus 5.
Give Opus 5.5 an ambitious task and let us know what you think!