提示词里一句话让 Claude Fable 5.2 主动重构代码

解决办法是在提示词里明确写“这个代码库是你的：它的用途和构建方式由你决定，你会继续在它上面开发”。加上这句话后，模型在约一半的测试里合并了重复代码；不加时这个比例低于十分之一。对经常让模型维护存量代码库的开发者来说，这是一个可以直接复制的具体写法。

Quoting Prompting Claude Fable 5.2

Claude Fable 5.2 responds closely to what the prompt says about who owns the code it works on. In Anthropic’s testing on small coding tasks, when a prompt said nothing about ownership or presented the code base as someone else’s, the model tended to add to the existing structure, even when that repeated existing code. [...] If you want the model to improve the structure as it works, say that the code is its own: This codebase is yours: what it's for and how it's built are your call, and you'll keep building on it. In Anthropic’s testing on small coding tasks, the model merged repeated code in about half of the tries with this sentence, and in under a tenth of the tries without it. — Prompting Claude Fable 5.2 , Anthropic documentation Tags: prompt-engineering , anthropic , generative-ai , ai , llms , claude-mythos-fable

本条情报归属 AITOP「技巧」核心栏目，重点聚焦北美前沿实验室与硅谷科技巨头。在跨区域产业观察坐标中，该动态直接关联「AI 开发者工具链、Coding Agent 与工程化实践」研究主线，反映出当前技术演进与商业落地的最新风向。涉及核心实体与技术议题包括：Claude、Anthropic、提示词工程、编程助手，读者可通过下方标签进入对应专题页查阅历史脉络与关联对比。

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