← All news·2026-08-14·3 min read

Anthropic’s codebase is self-maintained by Claude, with 388 PRs and a 46% merge rate.

Claude Code runs daily automated code maintenance on Anthropic’s codebase. In a few weeks it generated 388 pull requests (PRs) of which 180 were accepted and merged by humans (a 46% merge rate).

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Our AI coding assistant, Claude Code, automates the maintenance of our codebase on a daily basis. In a few weeks it has generated 388 pull requests (PRs) of which 180 have been accepted and merged by humans (a 46% merge rate). These PRs touch everything from iOS and Android to web and CLI, from deleting legacy code to stabilizing flaky tests.

It’s the first reported instance of an AI systematically maintaining production code at an AI company. Most of these PRs need human attention (it works with humans, not for them) but the time-intensive chore that used to take engineers hours is now done automatically, changing the equation for how many people are needed to maintain a large product.

Source: the-decoder.com

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EAEvgenii Arsentev

Author

Evgenii Arsentev

PhD · Chief Executive Officer, digital health