Cloudflare has launched Kitesurf, a browser specifically designed for AI agents that runs on Cloudflare Workers. The browser is more efficient in CPU and memory usage than Chromium and is now available for free in Browser Rendering.
Cloudflare had long considered developing its own browser, but it only recently became feasible thanks to technological advancements in their Developer Platform. The rise of AI agents and the demand for a browser better suited for automation made the project urgent.
Kitesurf is designed to meet the needs of AI agents, such as lower costs, scalability, and performance. Unlike traditional browsers, which are aimed at human users, AI agents focus on token counts, context windows, and efficiency.
Efficiency and performance
Kitesurf consumes significantly less CPU and memory than Chromium for tasks such as screenshots and HTML extraction. Tests show that Kitesurf uses up to 7 times less memory and up to 3.8 times less CPU for HTML extraction. Although Chromium is faster in wall time, Kitesurf wins on cost-saving factors such as memory and CPU usage.
The browser is optimized for tasks that AI agents frequently perform, such as processing large amounts of data and generating screenshots. Due to its focus on statelessness and isolation, Kitesurf is ideal for automation and bursty workloads.
Applications and limitations
Kitesurf is now available in Browser Rendering and can be used with existing tools such as Puppeteer, Playwright, and chrome-remote-interface. Users can test the browser via the Kitesurf Playground, where they can enter URLs to see how the browser renders pages.
However, Kitesurf still has limitations: it cannot play video, render WebGL, or maintain long-term, authenticated sessions. For such tasks, Chromium remains the better choice.