🤖 ia80 %Anthropic slashes 80% of Claude Code's system prompt for Fable 5 models

Anthropic slashes 80% of Claude Code's system prompt for Fable 5 models

Anthropic reduced Claude Code's system prompt by 80% to better suit its new Fable 5 models, deemed more autonomous.

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The fact

Detailed instructions now hinder performance, as the models are described as 'more imaginative' than predefined guidelines.

The shift favors context-based steering over rigid rules, per an Anthropic staffer.

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