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New Rules for Context Engineering in Claude 5 Series Models: Anthropic Removes Over 80% of System Prompts from Claude Code

Published: 2026-07-26 07:23 Source: Hacker News Hot (buzzing.cc Chinese Translation)

Anthropic has removed over 80% of the system prompts from Claude Code for next-generation models such as Claude Opus 5 and Claude Fable 5, with no measurable loss in coding benchmark scores.

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