AI coding tools can slow down seasoned developers by 19%

AI coding tools can slow down seasoned developers by 19%

Computerworld

Published

Experienced developers can take 19% longer to complete tasks when using popular AI assistants like Cursor Pro and Claude, challenging the tech industry’s prevailing narrative about AI coding tools, according to a comprehensive new study.

The research, conducted by Model Evaluation & Threat Research (METR), tracked 16 seasoned open-source developers as they completed 246 real-world coding tasks on mature repositories averaging over one million lines of code.

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