Claude releases Fable 5.1 prompting guide and API skill updates
ClaudeDevs · x · 2026-09-02
Claude released a prompting guide for Fable 5.1, detailing behavioral differences from the previous version, covering effort levels, tool-call batching, conversation history, writing style, and formatting. The claude-api skill was updated to assist with migration. The documentation also reiterates API restrictions against distillation attacks.
Related event: Anthropic Releases Official Prompting Guide for Claude Fable 5.1(9 posts)→
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