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Anthropic now merges over 30,000 code changes per day, up from 2,500 in May

simonwillison.net · 2026-10-19

Anthropic says the jump forced it to build a custom replacement for Git, with Claude itself the heaviest user of the new system. The figures are a concrete data point on how much code AI agents now write at one frontier lab.

“In May 2026, Anthropic averaged around 2,500 code changes merged per day; as of September, we merged over 30,000 per day.”

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Bears on: amodei-ai-writes-90pct-of-code-by-2025

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