Tech Ocean

Jul 25, 2026 · Artificial Intelligence

Why Cutting 80% of Claude’s System Prompt Improves Performance and How to Slim Your CLAUDE.md

Anthropic removed roughly 80% of Claude Code’s system prompts without measurable loss, showing that hard‑coded rules often conflict and waste compute, and outlining new best‑practice guidelines—letting the model decide, progressive disclosure, code‑centric specifications, and a four‑layer context hierarchy.