BREAKING
Anthropic Publishes Fable 5 Prompt Guide
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Context
SWE-Bench Pro: 80.3% vs 69.2%
Fable 580.3
Opus 4.869.2
Strengths and Trade-offs
Strengths
Hours-to-days autonomy
Strong on visual tasks
Grasps intent quickly
Trade-offs
Costly and slow
Over-planning tendency
Stops too early
Prompting Tips for Fable 5
1State intent and why
2Specify what not to do
3Keep instructions short
4Ask for self-verification
New Rules for Prompt Engineering
AI NEWS BLITZ
Anthropic has released dedicated prompting guidance for its flagship Claude Fable 5 model.