Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity - METR: We conduct a randomized controlled trial (RCT) 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. I'm seeing plenty of "I told you so" as this makes the rounds. But, having spent the past month deep in ...
