# GitHub — Usage metrics API adds pull request review stages

- Company: GitHub (github.com)
- Announced: 2026-09-25T21:09:40+00:00
- Category: api-release
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://github.blog/changelog/2026-09-25-usage-metrics-api-adds-pull-request-review-stages
- Record: https://forck.live/items/13923-usage-metrics-api-adds-pull-request-review-stages
- Subject: Copilot

GitHub's Copilot usage metrics API now includes pull request review stage breakdowns, showing median and 90th percentile times for three review phases: ready for review to first review, first review to final review, and final review to merge. The new pull_request_review_times array is available in enterprise and organization repository-level reports, with data building forward from September 21, 2026.

## Evidence

Verbatim from https://github.blog/changelog/2026-09-25-usage-metrics-api-adds-pull-request-review-stages:

> The enterprise and organization repository-level Copilot usage metrics reports now break down how long pull requests spend in each stage of review. A new pull_request_review_times array on each repos-1-day row reports a median and a 90th percentile for the time from ready for review to first review, first review to final review, and final review to merge.

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Record: https://forck.live/items/13923-usage-metrics-api-adds-pull-request-review-stages
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md