Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity
Link: metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/
We conduct a randomized controlled trial to understand how early-2025 AI tools affect the productivity of experienced open-source developers working on their own repositories. Surprisingly, we find that when developers use AI tools, they take 19% longer than without—AI makes them slower.