Building on the pull request throughput and cycle-time metrics shipped in February, which track Copilot-created pull requests from the coding agent, the Copilot usage metrics API now includes two new metrics focused on Copilot code review activity:

  • pull_requests.total_merged_reviewed_by_copilot: The total number of pull requests that were both merged and reviewed by Copilot code review during the reporting period.
  • pull_requests.median_minutes_to_merge_copilot_reviewed: The median time in minutes from pull request creation to merge, only calculated for pull requests reviewed by Copilot code review.

What’s new

The earlier release captured how Copilot helps author pull requests (i.e., coding agent–created pull requests that were merged and their time to merge).

These new metrics capture how Copilot helps review pull requests, letting you compare merge rates and cycle times for pull requests that received a Copilot code review against your baseline.

Both metrics are available in single-day and 28-day rolling window reports at the enterprise and organization levels.

Why this matters

  • Measure review impact: Compare time-to-merge for Copilot-reviewed pull requests against the overall median to see whether automated reviews help pull requests land faster.
  • Track code review adoption: See how many merged pull requests included a Copilot review across your enterprise or organization.
  • Complete the picture: Combined with the existing Copilot-created pull request metrics, you now have end-to-end visibility into how Copilot participates in the pull request lifecycle, from authoring to review to merge.

Important notes

  • These metrics are available to enterprise administrators and organization owners who have access to Copilot usage metrics.
  • Only pull requests that received a Copilot code review are included in these metrics. Pull requests created by the Copilot coding agent are tracked separately in the existing pull_requests.total_merged_created_by_copilot and pull_requests.median_minutes_to_merge_copilot_authored fields.

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