The new rules of context engineering for Claude 5 generation models

Jul 25, 2026 · 8:42 PM UTC ·17 min read · 0 reactions · 0 comments · 13 views

#rules #context #engineering #claude #generation

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The new rules of context engineering for Claude 5 generation models We removed over 80% of Claude Code's system prompt for more advanced models. Much of your context is assembled from your system prompt, Skills, CLAUDE.md files, memory, and other sources. We call this context engineering, and it makes a big impact on the results you generate when using Claude Code or in building your own agents.Unlike a prompt, context is used generally across many requests, so it cannot be as specific.

Key facts

▪The new rules of context engineering for Claude 5 generation models We removed over 80% of Claude Code's system prompt for more advanced models.
▪Much of your context is assembled from your system prompt, Skills, CLAUDE.md files, memory, and other sources.
▪We call this context engineering, and it makes a big impact on the results you generate when using Claude Code or in building your own agents.Unlike a prompt, context is used generally across many requests, so it cannot be as specific.

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Original publisher	Claude
Canonical URL	https://claude.com/blog/the-new-rules-of-context-engineering-for-claude-5-generation-models
Publication time	Sat, 25 Jul 2026 20:42:35 +0000
Retrieval time	2026-07-25T21:47:37.882Z
Last seen	2026-07-25T21:47:37.882Z
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The new rules of context engineering for Claude 5 generation models We removed over 80% of Claude Code's system prompt for more advanced models. How to apply the lessons we learned to your own context engineering in Claude Code and with your own agents. .button_main_icon { transition: color 300ms ease; } .button_main_wrap:hover .button_main_icon { color: var(--_button-style---icon-hover); } .button_main_wrap:focus-within .button_main_icon { color: var(--_button-style---text-hover) !important; } .button_main_wrap:focus-within { color: var(--_button-style---text-hover) !important; } .button_main_icon { transition: color 300ms ease; } .button_main_wrap:hover .button_main_icon { color: var(--_button-style---icon-hover); } .button_main_wrap:focus-within .button_main_icon { color:…

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