We turned on an AI code reviewer that comments on every pull request. How do you tell whether it catches real problems or just adds noise?

Published systems measure whether comments lead to code changes, aim for a precision target and filter non-actionable comments. Compare against human comments, seed known bugs for recall and run a randomised rollout.

Updated Nov 2026 · Original practice questions with worked answers and teaching rubrics. Our editorial policy explains the sources, review process and limits.