A deep dive into Anthropic's Claude AI system reveals that its system prompts are not static but dynamically assembled from multiple layers. These layers include a base core prompt, model-specific deltas tailored to tiers like Fable 5, Opus 5, Opus 4.8, and Sonnet 5, an optional L2 workflow prompt for 'Ultra' effort, and dynamic tool descriptions. This modular approach allows Anthropic to adjust model behavior and capabilities based on user settings and active tools. AI
IMPACT Understanding prompt assembly can inform AI development and prompt engineering strategies.
RANK_REASON Analysis of an AI system's internal workings and prompt structure. [lever_c_demoted from research: ic=1 ai=1.0]
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