diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
new file mode 100644
index 0000000..1c5b48b
--- /dev/null
+++ b/.github/workflows/benchmark.yml
@@ -0,0 +1,158 @@
+name: Benchmark
+
+on:
+  workflow_dispatch:
+    inputs:
+      ref_before:
+        description: "Branch, tag, or SHA before changes"
+        default: "main"
+        type: string
+        required: true
+      ref_after:
+        description: "Branch, tag, or SHA after changes"
+        type: string
+        required: true
+      pr_number:
+        description: "PR number (for posting the result as a comment)"
+        type: number
+        required: false
+
+# Cancels in-progress runs for runs comparing the same refs if the workflow is re-triggered.
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.ref_before }}-${{ inputs.ref_after }}
+  cancel-in-progress: true
+
+jobs:
+  benchmark:
+    runs-on: parity-large
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Set Up Rust Toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          # Without this it will override our rust flags.
+          rustflags: ""
+
+      - name: Install Benchmarking Tools
+        run: |
+          cargo install critcmp
+
+      - name: Checkout Commit Before Changes
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref_before }}
+
+      - name: Install Solc
+        uses: ./.github/actions/get-solc
+
+      - name: Download LLVM
+        uses: ./.github/actions/get-llvm
+        with:
+          target: x86_64-unknown-linux-gnu
+
+      - name: Set LLVM Environment Variables
+        run: |
+          echo "LLVM_SYS_181_PREFIX=$(pwd)/llvm-x86_64-unknown-linux-gnu" >> $GITHUB_ENV
+
+      - name: Build resolc
+        run: |
+          make install
+
+      - name: Run Benchmarks on Commit Before Changes
+        run: |
+          cargo bench --package resolc --bench compile -- --save-baseline resolc_before
+          cargo bench --package revive-benchmarks --bench parse -- --save-baseline yul_parse_before
+          cargo bench --package revive-benchmarks --bench lower -- --save-baseline yul_lower_before
+        timeout-minutes: 20
+
+      - name: Checkout Commit After Changes
+        run: |
+          git fetch origin ${{ inputs.ref_after }}
+          git checkout -f ${{ inputs.ref_after }}
+
+      - name: Install Solc
+        uses: ./.github/actions/get-solc
+
+      - name: Download LLVM
+        uses: ./.github/actions/get-llvm
+        with:
+          target: x86_64-unknown-linux-gnu
+
+      - name: Build resolc
+        run: |
+          make install
+
+      - name: Run Benchmarks on Commit After Changes
+        run: |
+          cargo bench --package resolc --bench compile -- --save-baseline resolc_changes
+          cargo bench --package revive-benchmarks --bench parse -- --save-baseline yul_parse_changes
+          cargo bench --package revive-benchmarks --bench lower -- --save-baseline yul_lower_changes
+        timeout-minutes: 20
+
+      - name: Compare Benchmarks
+        run: |
+          critcmp resolc_before resolc_changes > benchmarks_resolc
+          critcmp yul_parse_before yul_parse_changes > benchmarks_yul_parse
+          critcmp yul_lower_before yul_lower_changes > benchmarks_yul_lower
+
+      - name: Create Report
+        env:
+          REF_BEFORE: ${{ inputs.ref_before }}
+          REF_AFTER: ${{ inputs.ref_after }}
+        run: |
+          cat > BENCHMARK_REPORT.md << EOF
+          # Benchmarks
+
+          * **Ref Before:** \`$REF_BEFORE\`
+          * **Ref After:** \`$REF_AFTER\`
+
+          ## Compile E2E
+
+          <details>
+              <summary>Results</summary>
+
+          \`\`\`
+          $(cat benchmarks_resolc)
+          \`\`\`
+
+          </details>
+
+          ## Parse Yul
+
+          <details>
+              <summary>Results</summary>
+
+          \`\`\`
+          $(cat benchmarks_yul_parse)
+          \`\`\`
+
+          </details>
+
+          ## Lower Yul
+
+          <details>
+              <summary>Results</summary>
+
+          \`\`\`
+          $(cat benchmarks_yul_lower)
+          \`\`\`
+
+          </details>
+          EOF
+
+      - name: Post PR Comment with Benchmark Report
+        if: ${{ inputs.pr_number }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: benchmark
+          number: ${{ inputs.pr_number }}
+          path: BENCHMARK_REPORT.md
+
+      - name: Upload Benchmark Results
+        if: ${{ !inputs.pr_number }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: benchmark-report
+          path: BENCHMARK_REPORT.md
+          retention-days: 7