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Claude Just Got A 1 Million Token Brain. Most People Will Use It Wrong.

The free playbook with the exact prompt template I use to dump 500K plus tokens into Claude and get a clean structured answer back. Includes 7 workflows that broke at 200K and run clean at 1M, the 4 anti-patterns that kill long context, and how to verify Claude actually used the whole window.

The long-context prompt template that keeps Claude focused across 500K plus tokens
7 workflows that broke at 200K and now run clean (codebase QA, contract cross-check, meeting briefs, more)
The 4 anti-patterns that make long context look broken
How to verify Claude actually used the whole context (not just the top 50K)
The exact 'do this week' action to re-test workflows you gave up on

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The prompt template and workflows that turn Claude's new 1M token window from a headline into a real unlock.

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What's inside

What's Inside

What changed in Opus 4.7 and why the old rules about chunking break The prompt template I use to keep Claude focused across 500K plus tokens 7 workflows that broke at 200K and now run clean at 1M The 4 anti-patterns that make long context look broken How to verify Claude actually

WHAT ACTUALLY CHANGED

Claude Opus 4.7 ships with a 1 million token context window.

THE LONG-CONTEXT PROMPT TEMPLATE

This is the template I paste at the top of any prompt where the context is over 100K tokens.

About the author

Cooper Simson

Founder of Actionable AI. 30,000+ operators read the newsletter.

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