Cloudflare Moves Browser Run to Containers, Boosting Speed

Browser Run is now running on Cloudflare Containers, delivering faster performance and greater scale. The update allows spinning up 60 browsers per minute via the Workers binding and running up to 120 concurrently, four times the previous limit, with Quick Action response times dropping by more than 50%. The migration to Containers followed an earlier transition from Browser Isolation, and the team notes that DO-enabled Containers enable closer-to-request Durable Objects, helping latency.

They migrated from KV to D1 plus Queues to improve state management, using 100-row batches to support up to 500,000 containers per location, with current batch write P95 at 0.1 ms. The changes include dedicated container images, enabling faster upgrades and new features such as WebGL and WebMCP, while keeping the improvements live across all Workers plans. This is part of Cloudflare’s ongoing effort to scale Browser Run for AI agents and developer workflows, with guidance available in the documentation.