Anthropic replaces Git with Scion as AI agents push 30,000 merges a day

On October 13, 2026, Anthropic published an engineering post explaining how it replaced Git with an in-house version control system called Scion, after daily merges grew from 2,500 in May to over 30,000 in September. For most teams, Git remains the right choice; the signal to take away is that agent-written code shifts the bottleneck from humans to infrastructure.