Cloudflare announced Kitesurf on August 6, 2026, as a browser that runs entirely on Workers and is available for free in beta through Browser Run.
Cloudflare says Kitesurf is designed for AI agents rather than human browsing, so it prioritizes token count, context windows, scalability, performance, and cost over tabs, themes, extensions, synchronization, and pixel-perfect rendering.
Cloudflare's Kitesurf documentation says the stateless browser uses significantly less CPU and memory than Chromium for common agentic tasks such as screenshots and HTML extraction, allowing more sessions for bursty AI-driven workloads.
The Browser Run documentation lists screenshots, PDFs, Markdown, HTML elements, structured data, and crawled web content as outputs that developers can obtain from rendered webpages, and it lists Playwright MCP and CDP with MCP clients for AI-agent browsing.
Kitesurf starts each session fresh, isolates page components, and treats arbitrary pages as untrusted input; Cloudflare identifies prompt injection and tool safety as priorities for AI browsers.
For screenshots that contain faces, addresses, contact details, identifiers, codes, or metadata, Veilshare: Private Redaction detects and lets people redact those elements on device before export.
Cloudflare's documentation says Kitesurf is not yet intended for video, WebGL, bot-challenge handshakes, or long-running authenticated sessions that require persistent state, and recommends Browser Run's Chromium-based default browser for those cases.
