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Claude Tag lands 65% of the product engineering PRs for the Claude Code team.
Cat Wu reveals that Claude Tag, the team's Slack-integrated coding agent, now handles a majority of the product engineering team's pull requests. ✦ AI generated
Cat Wu · Simon Willison's Weblog · 2026-07-21 · original ↗
Claude Tag currently lands 65% of our product PRs right now. And this is a huge shift; this is more than 50% of our PRs. The way we see people split work between Claude Code and Claude Tag is: Claude Code is still the best place for your most complex tasks, when you're interactively iterating with the agent. But Claude Tag is great for having it work proactively on your behalf, so you no longer need to manually kick off Claude Code for all the bug reports that come up for features you're working on.
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- ·Claude Tag now lands 65% of product engineering PRs
- ·Represents a majority shift for the team's workflow
- ·Huge shift: crossed the 50% threshold
- ·Claude Code for complex, interactive, iterative tasks
- ·Claude Tag works proactively on your behalf
- ·No need to manually kick off Claude Code for every bug report
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supports → Claude Tag now writes 65% of the product team's code at Anthropic, including most of what built Claude Tag itself, after a year of internal dogfooding.Anthropic Claude Code team (@ClaudeDevs) · Latent Spacesupports → At Anthropic, traditional product requirement documents have been replaced by prototypes, and the vast majority of code — including nearly all of Claude Code itself — is now generated by Claude.Boris Cherny · The Pragmatic Engineerprovides context → The timeline between having an idea and building it has collapsed from months to weeks, so engineers need stronger product taste and business sense.Cat Wu · Simon Willison's Weblog