The gauge broke: devs felt 20% faster with AI, measured 19% slower

AI & Machine Learning, Software Development(intrepidkarthi.com)view on HackerNews
AImachine learningsoftware developmentcode reviewproductivityspeedefficiency

Author: intrepidkarthi

Date: 7/2/2026

Article Summary:
A study finds that AI tools make experienced developers slower on large codebases, despite feeling 20% faster, due to added review overhead and subtly wrong output.