Cloudflare has unveiled Kitesurf, a cloud-hosted browser designed specifically for AI agents. Unlike traditional web browsers built for humans, this browser focuses on managing context windows and performance, essential for AI tasks like navigating websites.

The launch comes just 12 weeks after Cloudflare decided to build it, running entirely on the company’s serverless platform called Workers. Kitesurf is available for free during beta testing in Browser Run, a feature that lets developers programmatically control headless browser instances on Cloudflare’s network.

Cloudflare claims Kitesurf is more efficient than Chromium, with significantly lower CPU and memory consumption for common agentic tasks like screenshots and HTML extraction. The browser itself was built from other technologies, including a modular rendering engine from Blitz; Firefox’s CSS parser, Stylo; and Boa JS, a Rust ECMAScript engine.

Despite its recent development, Kitesurf already passes around 215,000+ web platform tests and is adding hundreds more every week. The browser correctly renders popular benchmark applications like TodoMVC, Wikipedia, Hacker News, the Cloudflare Blog, and much of the Cloudflare dashboard.