BREAKING
Anthropic Publishes Fable 5 Prompt Guide
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Context
SWE-Bench Pro: 80.3% vs 69.2%
Fable 5
80.3
Opus 4.8
69.2
Strengths and Trade-offs
Strengths
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Hours-to-days autonomy
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Strong on visual tasks
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Grasps intent quickly
Trade-offs
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Costly and slow
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Over-planning tendency
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Stops too early
Prompting Tips for Fable 5
1
State intent and why
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2
Specify what not to do
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3
Keep instructions short
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4
Ask for self-verification
New Rules for Prompt Engineering
AI NEWS BLITZ
Anthropic has released dedicated prompting guidance for its flagship Claude Fable 5 model.