Playwright vs k6(2026)
Playwright is better for teams that need auto-waiting (no flaky tests). k6 is the stronger choice if developer-friendly (js scripts). Playwright is free and k6 is open-source (from $49/month (Grafana Cloud)).
Full feature breakdown, pricing details, and pros & cons below.
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Playwright
Playwright enables reliable end-to-end testing for modern web apps across Chromium, Firefox, and WebKit.
Visit Playwrightk6
k6 is a modern load testing tool using JavaScript/TypeScript scripts to simulate thousands of virtual users hitting your APIs.
Starting at $49/month (Grafana Cloud)
Visit k6How Do Playwright and k6 Compare on Features?
| Feature | Playwright | k6 |
|---|---|---|
| Pricing model | free | open-source |
| Starting price | Free | $49/month (Grafana Cloud) |
| Cross-browser testing | ✓ | — |
| Auto-wait | ✓ | — |
| Network interception | ✓ | — |
| Trace viewer | ✓ | — |
| Component testing | ✓ | — |
| API testing | ✓ | — |
| Load & performance testing | — | ✓ |
| JavaScript scripting | — | ✓ |
| Thresholds & SLOs | — | ✓ |
| Browser testing | — | ✓ |
| Extensions | — | ✓ |
| Grafana integration | — | ✓ |
Playwright Pros and Cons vs k6
P
Playwright
+Auto-waiting (no flaky tests)
+Multi-browser support
+Trace viewer debugging
+Fast parallel execution
−Heavier than Cypress for simple tests
−Learning curve
−Slower test authoring
k
k6
+Developer-friendly (JS scripts)
+Low resource usage
+Excellent metrics output
+Built-in Grafana integration
−Not for UI testing
−Limited to load/perf scenarios
−Extensions can be complex
Should You Use Playwright or k6?
Choose Playwright if…
- •Auto-waiting (no flaky tests)
- •Multi-browser support
- •Trace viewer debugging
Choose k6 if…
- •Developer-friendly (JS scripts)
- •Low resource usage
- •Excellent metrics output