Incredibly fast, stateful cloud sandboxes for coding agents. vmux run bundles and runs your code in a long-running Cloudflare container and gives you a preview URL in under 5 seconds. For agents — vmux exec --create --gpu H100 spins up a Modal sandbox with persistent GPU/CPU access.
A lot of care went into the bundler and CLI — feels familiar to Docker with vmux ps, vmux prune. Deploy to preview in under 3 seconds cold start.