Comment by narush

Qualitatively, we don't see a drop in PR quality in between AI-allowed and AI-disallowed conditions in the study; the devs who participate are generally excellent, know their repositories standards super well, and aren't really into the 'get up a bad PR' vibe -- the median review time on the PRs in the study is about a minute.

Developers totally spend time totally differently, though, this is a great callout! On page 10 of the paper [1], you can see a breakdown of how developers spend time when they have AI vs. not - in general, when these devs have AI, they spend a smaller % of time writing code, and a larger % of time working with AI (which... makes sense).

[1] https://metr.org/Early_2025_AI_Experienced_OS_Devs_Study.pdf