AI Made Developers 19% Slower. They Thought It Made Them 24% Faster.
METR ran a proper randomized controlled trial. 246 real tasks. Expert developers. State-of-the-art AI tools. Result: developers were 19% slo...
Jun 7, 2026
7 min
METR ran a proper randomized controlled trial. 246 real tasks. Expert developers. State-of-the-art AI tools. Result: developers were 19% slo...