diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
new file mode 100644
index 0000000..4380ba8
--- /dev/null
+++ b/.github/workflows/benchmarks.yml
@@ -0,0 +1,103 @@
+name: Performance Benchmarks
+
+on:
+ push:
+ branches: [main]
+ pull_request:
+ branches: [main]
+ workflow_dispatch:
+
+concurrency:
+ group: bench-${{ github.event.pull_request.number || github.sha }}
+ cancel-in-progress: true
+
+permissions:
+ contents: read
+ pull-requests: write
+
+env:
+ CARGO_TERM_COLOR: always
+
+jobs:
+ benchmarks:
+ name: Criterion Benchmarks
+ runs-on: blacksmith-2vcpu-ubuntu-2404
+ timeout-minutes: 30
+ steps:
+ - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+ - uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7 # stable
+ with:
+ toolchain: 1.92.0
+ - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2
+
+ - name: Run benchmarks
+ run: cargo bench --locked 2>&1 | tee benchmark_output.txt
+
+ - name: Upload benchmark results
+ if: always()
+ uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+ with:
+ name: benchmark-results
+ path: |
+ target/criterion/
+ benchmark_output.txt
+ retention-days: 30
+
+ - name: Post benchmark summary on PR
+ if: github.event_name == 'pull_request'
+ uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8
+ with:
+ script: |
+ const fs = require('fs');
+ const output = fs.readFileSync('benchmark_output.txt', 'utf8');
+
+ // Extract Criterion result lines
+ const lines = output.split('\n').filter(l =>
+ l.includes('time:') || l.includes('change:') || l.includes('Performance')
+ );
+
+ if (lines.length === 0) {
+ core.info('No benchmark results to post.');
+ return;
+ }
+
+ const body = [
+ '## 📊 Benchmark Results',
+ '',
+ '```',
+ lines.join('\n'),
+ '```',
+ '',
+ 'Full output
',
+ '',
+ '```',
+ output.substring(0, 60000),
+ '```',
+ '