Git was built for offline humans. Anthropic's clients are agents: 30,000+ merges a day in September 2026. So they rebuilt source control in-house: Scion replaces Git, Antique does code review. The ideas are meant for Git, GitHub and GitLab. anthropic.com/engineering/redesigning-source-control
anthropic.comRedesigning source control at AnthropicAs our merges per day grew more than tenfold, source control became our biggest development bottleneck. Here, we share how we migrated to an in-house version control system in five months.
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