Steven Gonsalvez

Software Engineer

Decoding Claude's DNA: Comparing System Prompts Across Fable 5, Opus 5/4.8/4.6, Sonnet 5 & Haiku 4.5

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Claude system prompt deep-dive across model versions. Essential.

The text below is an automated extraction of the article at https://www.reddit.com/r/ClaudeAI/comments/1vm4dzz/decoding_claudes_dna_comparing_system_prompts/, stored verbatim in the public cerebro-vault repository. Copyright remains with the original publisher (reddit.com).

Decoding Claude's DNA: Comparing System Prompts Across Fable 5, Opus 5/4.8/4.6, Sonnet 5 & Haiku 4.5

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