Canonical event

METR publishes experienced-developer productivity experiment

A randomized study of sixteen experienced developers reports slower completion with early-2025 AI tools on their own repositories.

Artifacts

METR publishes experienced-developer productivity experiment
documented_by · research_report

Signals

A randomized study of sixteen experienced developers reports slower completion with early-2025 AI tools on their own repositories. The measured nineteen-percent slowdown is specific to this sample and setting, not every developer or later model.
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