更新：Anthropic 正如我们昨天预测的那样推出了 Claude Fable 5.1

未列出的模型 slug 现在返回 404，而不是 AWS 的 invalid-ID 错误，这一微弱线索表明部署工作可能正在进行中。

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为何重要

Bedrock 的暂存阶段可以先于模型发布。404 给开发者一个早期线索，表明 Anthropic 可能在经过数月的安全性调优后，正在准备其首个 Fable 小版本发布。

A screen displays an infrared view of an error message referencing Anthropic's Claude Fable 5.1 model on AWS Bedrock.

Anthropic appears to be preparing Claude Fable 5.1 for Amazon Bedrock, according to an API response uncovered on Monday, August 31st, that distinguishes the unlisted model from invalid identifiers.…

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