Anthropic: agent-scale merges — ~2,500 code changes/day in May, 30,000+/day in September — broke git; monorepo migrated to in-house source control in five months
From the AI digest for 2026-10-13
What happened: Anthropic's X account (published Monday, October 13, 2026, around 12:36 PM ET) announced a new engineering-blog post, "Creating in-house source control": "In May, we merged around 2,500 code changes per day. In September, we merged more than 30,000 per day. As a result, we became bottlenecked by developer infrastructure built for human (rather than agent) scale." The post describes how the company built a new version control system and "fully migrated our monorepo from git" in five months (anthropic.com/engineering/redesigning-source-control).
What's genuinely new: No storyline in the memory covers Anthropic's engineering infrastructure, so this enters as a debut datapoint with one clear adjacency: the Perplexity thread carries an October 12 entry — Perplexity Projects, "every Project is a Git repo," framed as "version control purpose-built for machine actors" — and the Anthropic post is the same pressure asserted from the other side: agent-scale change volume breaking version control built for humans inside a frontier lab. The numbers are self-reported by a company whose framing is itself the story (the stated bottleneck is agent workload, and Anthropic carries an IPO watch and an agent-incident corpus in the record); the "~2,500 → 30,000+ per day" trajectory and the "agent scale" attribution are company framing, not independently verified. Even so, the claim is concrete, dated, and tied to a checkable published artifact — a step above the X-grade layer this window otherwise runs on.
Watch: the blog post's technical detail — what the new source-control system changes about branching, review, and merge mechanics at "30,000 changes/day" scale; whether OpenAI, Meta or xAI disclose comparable agent-scale infrastructure numbers; whether this converges with the Perplexity Git-for-agents move into an agent-native version-control standard, or stays an in-house footnote.
Links: Anthropic (X) · Anthropic engineering blog