GitHub's usage metrics API now times three pull request review stages, human reviews only, from 21 Sep
GitHub Changelog·low signal
The repos-1-day reports add median and p90 minutes for three stages: ready to first review, first to final review, and final review to merge. They also add total_merged and authored_by/reviewed_by fields. Bot reviews are excluded and nothing is backfilled before 21 Sep 2026. Orgs get a baseline for checking whether Copilot code review actually shortens review cycles.