Claude Code article says removing 80% of the system prompt changed how newer Claude 5 models work
AccBalanced · x · 2026-07-25
A thread shares an article on the new rules of context engineering for Claude 5 models.
Main points
- The author says they removed about 80% of the Claude Code system prompt for newer models.
- The article focuses on how to write better system prompts, skills, and Claude.MD files.
- The broader takeaway is that most gains come less from prompt hacks and more from finding novel ways to apply the tool to real work.
This is practical guidance for people building workflows around Claude Code and similar agentic coding tools, rather than a discussion of model capability in the abstract.
Related event: Anthropic Slashes Claude Code System Prompts by Over 80%(11 posts)→
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