Anthropic went from 2,500 code merges a day to over 30,000, so it took its monorepo off git

Anthropic averaged around 2,500 code changes merged per day in May 2026 and merged over 30,000 a day by September, and the source control underneath it gave way. Anthropic says it built its own version control system, called Scion, and moved its monorepo off git in five months. The scale is the…

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