diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index d9be2c8842ec4..87832b1c52ca2 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -37,7 +37,6 @@ on:
       - 'tests/performance/**'
       # Confirm any changes to relevant workflow files.
       - '.github/workflows/performance.yml'
-      - '.github/workflows/reusable-performance.yml'
       - '.github/workflows/reusable-performance-*.yml'
   workflow_dispatch:
 
diff --git a/.github/workflows/reusable-performance.yml b/.github/workflows/reusable-performance.yml
deleted file mode 100644
index e10022c65380f..0000000000000
--- a/.github/workflows/reusable-performance.yml
+++ /dev/null
@@ -1,357 +0,0 @@
-##
-# A reusable workflow that runs the performance test suite.
-##
-name: Run performance Tests
-
-on:
-  workflow_call:
-    inputs:
-      LOCAL_DIR:
-        description: 'Where to run WordPress from.'
-        required: false
-        type: 'string'
-        default: 'build'
-      BASE_TAG:
-        description: 'The version being used for baseline measurements.'
-        required: false
-        type: 'string'
-        default: '6.7.0'
-      php-version:
-        description: 'The PHP version to use.'
-        required: false
-        type: 'string'
-        default: 'latest'
-      memcached:
-        description: 'Whether to enable memcached.'
-        required: false
-        type: 'boolean'
-        default: false
-      multisite:
-        description: 'Whether to use Multisite.'
-        required: false
-        type: 'boolean'
-        default: false
-    secrets:
-      CODEVITALS_PROJECT_TOKEN:
-        description: 'The authorization token for https://www.codevitals.run/project/wordpress.'
-        required: false
-
-env:
-  PUPPETEER_SKIP_DOWNLOAD: true
-
-  # Prevent wp-scripts from downloading extra Playwright browsers,
-  # since Chromium will be installed in its dedicated step already.
-  PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: true
-
-  # Performance testing should be performed in an environment reflecting a standard production environment.
-  LOCAL_WP_DEBUG: false
-  LOCAL_SCRIPT_DEBUG: false
-  LOCAL_SAVEQUERIES: false
-  LOCAL_WP_DEVELOPMENT_MODE: "''"
-
-  # This workflow takes two sets of measurements — one for the current commit,
-  # and another against a consistent version that is used as a baseline measurement.
-  # This is done to isolate variance in measurements caused by the GitHub runners
-  # from differences caused by code changes between commits. The BASE_TAG value here
-  # represents the version being used for baseline measurements. It should only be
-  # changed if we want to normalize results against a different baseline.
-  BASE_TAG: ${{ inputs.BASE_TAG }}
-  LOCAL_DIR: ${{ inputs.LOCAL_DIR }}
-  TARGET_REF: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.ref || '' }}
-  TARGET_SHA: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha || github.event.before }}
-
-  LOCAL_PHP_MEMCACHED: ${{ inputs.memcached }}
-  LOCAL_PHP: ${{ inputs.php-version }}${{ 'latest' != inputs.php-version && '-fpm' || '' }}
-  LOCAL_MULTISITE: ${{ inputs.multisite }}
-
-# Disable permissions for all available scopes by default.
-# Any needed permissions should be configured at the job level.
-permissions: {}
-
-jobs:
-  # Performs the following steps:
-  # - Configure environment variables.
-  # - Checkout repository.
-  # - Determine the target SHA value (on `workflow_dispatch` only).
-  # - Set up Node.js.
-  # - Log debug information.
-  # - Install npm dependencies.
-  # - Install Playwright browsers.
-  # - Build WordPress.
-  # - Start Docker environment.
-  # - Install object cache drop-in.
-  # - Log running Docker containers.
-  # - Docker debug information.
-  # - Install WordPress.
-  # - Enable themes on Multisite.
-  # - Install WordPress Importer plugin.
-  # - Import mock data.
-  # - Deactivate WordPress Importer plugin.
-  # - Update permalink structure.
-  # - Install additional languages.
-  # - Disable external HTTP requests.
-  # - Disable cron.
-  # - List defined constants.
-  # - Install MU plugin.
-  # - Run performance tests (current commit).
-  # - Download previous build artifact (target branch or previous commit).
-  # - Download artifact.
-  # - Unzip the build.
-  # - Run any database upgrades.
-  # - Flush cache.
-  # - Delete expired transients.
-  # - Run performance tests (previous/target commit).
-  # - Set the environment to the baseline version.
-  # - Run any database upgrades.
-  # - Flush cache.
-  # - Delete expired transients.
-  # - Run baseline performance tests.
-  # - Archive artifacts.
-  # - Compare results.
-  # - Add workflow summary.
-  # - Set the base sha.
-  # - Set commit details.
-  # - Publish performance results.
-  # - Ensure version-controlled files are not modified or deleted.
-  performance:
-    name: ${{ inputs.multisite && 'Multisite' || 'Single site' }} / ${{ inputs.memcached && 'Memcached' || 'Default' }}
-    runs-on: ubuntu-24.04
-    permissions:
-      contents: read
-    if: ${{ ! contains( github.event.before, '00000000' ) }}
-
-    steps:
-      - name: Configure environment variables
-        run: |
-          echo "PHP_FPM_UID=$(id -u)" >> "$GITHUB_ENV"
-          echo "PHP_FPM_GID=$(id -g)" >> "$GITHUB_ENV"
-
-      - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
-          fetch-depth: ${{ github.event_name == 'workflow_dispatch' && '2' || '1' }}
-          persist-credentials: false
-
-      # The `workflow_dispatch` event is the only one missing the needed SHA to target.
-      - name: Retrieve previous commit SHA (if necessary)
-        if: ${{ github.event_name == 'workflow_dispatch' }}
-        run: echo "TARGET_SHA=$(git rev-parse HEAD^1)" >> "$GITHUB_ENV"
-
-      - name: Set up Node.js
-        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with:
-          node-version-file: '.nvmrc'
-          cache: npm
-
-      - name: Log debug information
-        run: |
-          npm --version
-          node --version
-          curl --version
-          git --version
-          locale -a
-
-      - name: Install npm dependencies
-        run: npm ci
-
-      - name: Install Playwright browsers
-        run: npx playwright install --with-deps chromium
-
-      - name: Build WordPress
-        run: npm run build
-
-      - name: Start Docker environment
-        run: npm run env:start
-
-      - name: Install object cache drop-in
-        if: ${{ inputs.memcached }}
-        run: cp src/wp-content/object-cache.php build/wp-content/object-cache.php
-
-      - name: Log running Docker containers
-        run: docker ps -a
-
-      - name: Docker debug information
-        run: |
-          docker -v
-          docker compose run --rm mysql mysql --version
-          docker compose run --rm php php --version
-          docker compose run --rm php php -m
-          docker compose run --rm php php -i
-          docker compose run --rm php locale -a
-
-      - name: Install WordPress
-        run: npm run env:install
-
-      - name: Enable themes on Multisite
-        if: ${{ inputs.multisite }}
-        run: |
-          npm run env:cli -- theme enable twentytwentyone --network --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- theme enable twentytwentythree --network --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- theme enable twentytwentyfour --network --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- theme enable twentytwentyfive --network --path="/var/www/${LOCAL_DIR}"
-
-      - name: Install WordPress Importer plugin
-        run: npm run env:cli -- plugin install wordpress-importer --activate --path="/var/www/${LOCAL_DIR}"
-
-      - name: Import mock data
-        run: |
-          curl -O https://raw.githubusercontent.com/WordPress/theme-test-data/b9752e0533a5acbb876951a8cbb5bcc69a56474c/themeunittestdata.wordpress.xml
-          npm run env:cli -- import themeunittestdata.wordpress.xml --authors=create --path="/var/www/${LOCAL_DIR}"
-          rm themeunittestdata.wordpress.xml
-
-      - name: Deactivate WordPress Importer plugin
-        run: npm run env:cli -- plugin deactivate wordpress-importer --path="/var/www/${LOCAL_DIR}"
-
-      - name: Install additional languages
-        run: |
-          npm run env:cli -- language core install de_DE --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- language plugin install de_DE --all --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- language theme install de_DE --all --path="/var/www/${LOCAL_DIR}"
-
-      # Prevent background update checks from impacting test stability.
-      - name: Disable external HTTP requests
-        run: npm run env:cli -- config set WP_HTTP_BLOCK_EXTERNAL true --raw --type=constant --path="/var/www/${LOCAL_DIR}"
-
-      # Prevent background tasks from impacting test stability.
-      - name: Disable cron
-        run: npm run env:cli -- config set DISABLE_WP_CRON true --raw --type=constant --path="/var/www/${LOCAL_DIR}"
-
-      - name: List defined constants
-        run: npm run env:cli -- config list --path="/var/www/${LOCAL_DIR}"
-
-      - name: Install MU plugin
-        run: |
-          mkdir "./${LOCAL_DIR}/wp-content/mu-plugins"
-          cp ./tests/performance/wp-content/mu-plugins/server-timing.php "./${LOCAL_DIR}/wp-content/mu-plugins/server-timing.php"
-
-      - name: Run performance tests (current commit)
-        run: npm run test:performance
-
-      - name: Download previous build artifact (target branch or previous commit)
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        id: get-previous-build
-        with:
-          script: |
-            const artifacts = await github.rest.actions.listArtifactsForRepo({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              name: 'wordpress-build-' + process.env.TARGET_SHA,
-            });
-
-            const matchArtifact = artifacts.data.artifacts[0];
-
-            if ( ! matchArtifact ) {
-              core.setFailed( 'No artifact found!' );
-              return false;
-            }
-
-            const download = await github.rest.actions.downloadArtifact( {
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              artifact_id: matchArtifact.id,
-              archive_format: 'zip',
-            } );
-
-            const fs = require( 'fs' );
-            fs.writeFileSync( process.env.GITHUB_WORKSPACE + '/before.zip', Buffer.from( download.data ) )
-
-            return true;
-
-      - name: Unzip the build
-        if: ${{ steps.get-previous-build.outputs.result }}
-        run: |
-          unzip "${GITHUB_WORKSPACE}/before.zip"
-          unzip -o "${GITHUB_WORKSPACE}/wordpress.zip"
-
-      - name: Run any database upgrades
-        if: ${{ steps.get-previous-build.outputs.result }}
-        run: npm run env:cli -- core update-db --path="/var/www/${LOCAL_DIR}"
-
-      - name: Flush cache
-        if: ${{ steps.get-previous-build.outputs.result }}
-        run: npm run env:cli -- cache flush --path="/var/www/${LOCAL_DIR}"
-
-      - name: Delete expired transients
-        if: ${{ steps.get-previous-build.outputs.result }}
-        run: npm run env:cli -- transient delete --expired --path="/var/www/${LOCAL_DIR}"
-
-      - name: Run target performance tests (previous/target commit)
-        if: ${{ steps.get-previous-build.outputs.result }}
-        env:
-          TEST_RESULTS_PREFIX: before
-        run: npm run test:performance
-
-      - name: Set the environment to the baseline version
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' }}
-        run: |
-          VERSION="${BASE_TAG}"
-          VERSION="${VERSION%.0}"
-          npm run env:cli -- core update --version="$VERSION" --force --path="/var/www/${LOCAL_DIR}"
-          npm run env:cli -- core version --path="/var/www/${LOCAL_DIR}"
-
-      - name: Run any database upgrades
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' }}
-        run: npm run env:cli -- core update-db --path="/var/www/${LOCAL_DIR}"
-
-      - name: Flush cache
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' }}
-        run: npm run env:cli -- cache flush --path="/var/www/${LOCAL_DIR}"
-
-      - name: Delete expired transients
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' }}
-        run: npm run env:cli -- transient delete --expired --path="/var/www/${LOCAL_DIR}"
-
-      - name: Run baseline performance tests
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' }}
-        env:
-          TEST_RESULTS_PREFIX: base
-        run: npm run test:performance
-
-      - name: Archive artifacts
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        if: always()
-        with:
-          name: performance-artifacts${{ inputs.multisite && '-multisite' || '' }}${{ inputs.memcached && '-memcached' || '' }}-${{ github.run_id }}
-          path: artifacts
-          if-no-files-found: ignore
-          include-hidden-files: true
-
-      - name: Compare results
-        run: node ./tests/performance/compare-results.js "${RUNNER_TEMP}/summary.md"
-
-      - name: Add workflow summary
-        run: cat "${RUNNER_TEMP}/summary.md" >> "$GITHUB_STEP_SUMMARY"
-
-      - name: Set the base sha
-        # Only needed when publishing results.
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' && ! inputs.memcached && ! inputs.multisite }}
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        id: base-sha
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const baseRef = await github.rest.git.getRef({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              ref: 'tags/' + process.env.BASE_TAG,
-            });
-            return baseRef.data.object.sha;
-
-      - name: Publish performance results
-        # Only publish results on pushes to trunk.
-        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/trunk' && ! inputs.memcached && ! inputs.multisite }}
-        env:
-          BASE_SHA: ${{ steps.base-sha.outputs.result }}
-          CODEVITALS_PROJECT_TOKEN: ${{ secrets.CODEVITALS_PROJECT_TOKEN }}
-          HOST_NAME: "codevitals.run"
-        run: |
-          if [ -z "$CODEVITALS_PROJECT_TOKEN" ]; then
-            echo "Performance results could not be published. 'CODEVITALS_PROJECT_TOKEN' is not set"
-            exit 1
-          fi
-          COMMITTED_AT="$(git show -s "$GITHUB_SHA" --format='%cI')"
-          node ./tests/performance/log-results.js "$CODEVITALS_PROJECT_TOKEN" trunk "$GITHUB_SHA" "$BASE_SHA" "$COMMITTED_AT" "$HOST_NAME"
-
-      - name: Ensure version-controlled files are not modified or deleted
-        run: git diff --exit-code