Claude outgrew Anthropic's own tooling. Git couldn't keep up. Anthropic merged a
By John Aspinall ✱ · October 15, 2026 · Curated by George's Blog
Claude outgrew Anthropic's own tooling.
Git couldn't keep up.
Anthropic merged about 2,500 code changes a day in May. By September it was over 30,000 a day.
(Their engineering team published the numbers on Oct 13.)
Writing the code stopped being the slow part. Everything built for human pace became the bottleneck: source control, builds and CI. So a team of seven built their own version control system, called Scion, and moved their monorepo off git in five months.
CI and research checkouts went from minutes to seconds, and CI alone got back 25% of its CPU.
You don't merge 30,000 changes a day. You'll hit the same wall anyway, just at a smaller desk.
Your agent drafts faster than you can review?
⤷ Your approval queue sets the speed now.
Agent output piling up in a folder nobody opens?
⤷ Fix that handoff before you add another agent.
I'm guilty of this one. My content agents bring me Substack topic options three times a week, and Monday's batch is still sitting there because I never picked one.
Anthropic says Scion only makes sense at huge scale, and they're right. The part that applies to every operator is looking at the human step that comes right after the agent finishes.
Try this: pick one workflow where an agent already does the first draft, time how long its output waits on a person, and decide what that person can stop approving.