Cloudflare Launches Kitesurf Browser, Cutting AI Agent Memory Use by Up to 7x

3 articles · Updated · The Cloudflare Blog · Aug 6

Kitesurf is now available free in beta through Cloudflare Browser Run, giving AI agents a browser built on Workers rather than a full Chromium stack.
Cloudflare said the browser targets agent workloads such as screenshots and HTML extraction, where Chromium’s human-focused features add costly CPU and memory overhead.
On a 14-URL test corpus, Kitesurf used 3.1x less CPU for screenshots, 3.8x less for HTML extraction, and 4.7x to 7.0x less memory, though wall time was about 1.7x to 1.8x slower.
The browser, whose first commit came in May, already passes more than 215,000 Web Platform Tests and works with existing CDP clients including Puppeteer and Playwright.
Kitesurf extends Cloudflare’s broader push for an 'Agentic Internet,' but the company says Chromium remains the better option for video, WebGL, long authenticated sessions and bot-challenge handshakes.