Kitesurf

Kitesurf is Cloudflare's agent-first browser that runs in V8 isolates on Workers. developers.cloudflare.com/browser-run/kitesurf says Kitesurf is in beta and available for free, behind per-account limits. blog.cloudflare.com/kitesurf still claims 3.1x-7.0x less CPU than Chromium on their task set, CDP compatibility, and that they will open source it when ready. github.com/cloudflare/kitesurf returned 404 from this network. Do not list a public GitHub star count.

Compare Cloudflare Computer if you wanted a Durable Object filesystem, and Playwright if you needed a real Chromium driver.

Key Features

• Workers isolate, not a Chromium fleet: The blog and playground describe a stateless session for the length of a task.
• CDP and MCP: The playground still shows a wss://kitesurf.cloudflare.app/devtools/browser endpoint and an npx chrome-devtools-mcp example.
• Not pixel-perfect: Docs have a "what Kitesurf cannot do yet" section. Confirm that list before you promise form-heavy or auth-heavy sites.
• Source later: Open source is a promise, not a repo we could clone.

Use Cases

• Agents that need a cheap HTML/screenshot pass on Cloudflare's edge.
• Teams already on Browser Run who can flip browser=kitesurf in beta.
• People who need full Chromium: stay on Playwright or Browser Run Chromium.

Limitation: 3-7x CPU/memory is Cloudflare's published comparison, not a number we re-ran. There is no public per-session dollar table beyond "free in beta."

Pricing

Browser Run / Kitesurf docs on 2026-08-17.

If a leftover blog still lists a GitHub star count or a paid Kitesurf SKU, treat the 404 and the beta sentence as the source.

Getting Started

1. Open the playground.
2. Read When to use Kitesurf.
3. Point a CDP client at the playground or Browser Run endpoint only after you accept beta limits.
4. Confirm Playwright if the page needs Chromium fidelity.

Frequently Asked Questions

Is the source on GitHub?

Not at the URL in our old catalog. The blog still says they will open source it later.

Is it free forever?

Docs say free while in beta.

Same as Playwright?

No. Playwright drives Chromium. Kitesurf is a lighter Workers browser with weaker fidelity.

Alternatives

• Playwright: Real Chromium automation.
• Cloudflare Computer: Agent disk, not a browser.

Tips

1. Quote "free in beta," not a fake seat price.
2. Do not paste a GitHub star number.
3. Confirm the cannot-do list before a demo on a hard site.

Conclusion

Kitesurf is a beta Workers browser with a playground and a 404 GitHub URL, not an open-source Chromium replacement. Start at kitesurf.cloudflare.app, then decide whether Playwright already covers the page you need.