Anthropic 提示旧提示词习惯拖慢 Claude Opus 5.5 表现
Anthropic says outdated prompting habits are slowing down Claude Opus 5.5
如果你在用 Claude，这篇挺实用：Anthropic 官方承认老一套的"think hard"指令对 Opus 5.5 反而有害，建议直接从 Medium 档起步。写提示词的人可以照着指南把旧模板清理一遍，响应速度和 token 开销都会改善。
Anthropic 将 Claude Opus 5.5 设为所有付费计划的默认模型，并同步发布了一份提示词指南，指出许多用户沿用的旧习惯反而在拖慢新模型。指南的核心建议是：放弃"think hard"这类强制深度思考的指令，改从 Medium effort（中等推理力度）起步，让模型自行判断何时投入更多算力。
文章解释，Opus 5.5 的推理控制机制已内置档位调节，旧式的手动加强指令会迫使模型在简单任务上也进行冗长思考，增加延迟和成本。从 Medium 起步、按需升档的做法与模型新的默认行为更匹配。
对开发者而言，这意味着迁移到 Opus 5.5 时需要重写一部分系统提示词，尤其是此前针对旧模型调优的思考链指令。仍在付费计划上使用旧提示模板的团队，可对照 Anthropic 的指南逐条排查。
Anthropic says outdated prompting habits are slowing down Claude Opus 5.5
Anthropic has made Claude Opus 5.5 the default model on all paid plans and published a guide that does away with old prompting habits. The main takeaway is to drop "think hard" and start at Medium effort. The article Anthropic says outdated prompting habits are slowing down Claude Opus 5.5 appeared first on The Decoder .
This report is categorized under AITOP's "How-to" desk, focusing on US frontier AI labs and Silicon Valley technology leaders. Within our cross-regional analytical framework, it directly maps to AI developer toolchains, coding agents, and engineering workflows. Key entities and technical topics under continuous tracking include Claude, Claude Opus 5.5, Anthropic, prompt engineering.
Source attribution: curated from Decoder (@Matthias Bastian). Cross-source corroboration: 11 independent sources have covered this development (including AI Engineer, 宝玉, rohanpaul_ai), confirming industry-wide signal strength.
