@@ -229,6 +229,8 @@ jobs:
               with:
                   name: gutenberg-${{ ! matrix.IS_GUTENBERG_PLUGIN && 'wordpress-develop' || 'plugin' }}
                   path: ./gutenberg.zip
+                  # Pull request builds only need to outlive Playground previews of active pull requests.
+                  retention-days: ${{ github.event_name == 'pull_request' && 14 || 90 }}
 
             - name: Build release notes draft
               if: ${{ matrix.IS_GUTENBERG_PLUGIN && needs.bump-version.outputs.new_version }}
 
@@ -70,6 +70,7 @@ jobs:
                   name: failures-artifacts--${{ matrix.part }}
                   path: artifacts/test-results
                   if-no-files-found: ignore
+                  retention-days: 14
 
             - name: Archive flaky tests report
               uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
@@ -96,6 +97,7 @@ jobs:
                   # Retain the merged artifacts in case of a rerun.
                   pattern: failures-artifacts*
                   delete-merged: true
+                  retention-days: 14
 
             - name: Merge flaky tests reports
               uses: actions/upload-artifact/merge@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
 
@@ -112,6 +112,8 @@ jobs:
                   name: build-assets
                   path: |
                       ./build/
+                  # Only consumed by the jobs of this run, including re-runs.
+                  retention-days: 3
 
     test-php:
         name: PHP ${{ matrix.php }}${{ matrix.multisite && ' multisite' || '' }} on Linux