Cloudflare opens the code of Kitesurf, its browser for AI agents

On 13 November 2026, Cloudflare made Kitesurf open source with the Apache 2.0 license. Kitesurf is a browser for AI agents. It opens pages, operates page code and makes screenshots without a browser container. Cloudflare tells that it uses less CPU and memory than a full browser such as Chromium. Cloudflare gave no numbers. Developers can read, change and deploy the code.

How it works

Kitesurf has 3 parts. The Engine manages sessions, PageScript operates the page code, and PageRenderer makes the visual result. It has a Chrome DevTools Protocol endpoint, which is a control interface. Puppeteer and agent software can connect to it.

One isolated worker does all fetches from the network.

The proof

The text gives no test results for speed, CPU or memory. Cloudflare points to a page of standards tests and to benchmarks, but it gives no results. For a local start, it is necessary to have Bazelisk, Node.js 22 and pnpm 9.15.4.

What is not known

Cloudflare tells that Kitesurf is not complete. It works on compatibility, reliability and efficiency. To operate a copy on Cloudflare, it is necessary to have a Workers Paid plan. A person who wants to add code must first get approval from a maintainer.

Insight: Free code still leads to the paid platform

The Kitesurf code is free, but a copy on your Cloudflare account must have a Workers Paid plan. In October 2026, NVIDIA opened its platform that gives GPU resources to AI workloads. Its free Community Product has no enterprise support from NVIDIA. This seems a move to put agent builders on the platform of the maker of the code. Count the platform bill, not only the license.