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Redesigning source control at Anthropic

L4 · DeveloperTools & ProductsSimon Willison's Blog· 10/13/2026

Shows how AI companies are reinventing core developer infrastructure to handle massive AI-driven code velocity increases.

AI Summary

Anthropic built a custom source control system called Scion to handle 30,000+ daily code changes and 25M daily checkouts, replacing Git due to extreme scaling requirements.

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