SOLARIFastest Agent Infrastructure.
Fast, scalable, and isolated environments for running AI agents. Cloud browsers, sandboxes, and computers, all from one API.
Everything an agent runs on, from one API.
Pick the machine the job needs: a browser to work the web, a sandbox to run code, or a full computer with a screen. Same key, same fast pool, same isolation.
Work the web
A real Chrome for agents, driven over CDP or Playwright, with persistent profiles and stealth that gets past bot defenses. Run it headless, or as a live session a human can watch and take over.
Run code
A clean Linux machine for untrusted code, tools, and long tasks. Stateful sessions, a real filesystem, snapshots you can fork. Each one a hardware-isolated VM, not a shared-kernel container.
Drive a desktop
A full GUI machine your agent controls with real mouse and keyboard, for the desktop apps built for people, not APIs. Pause it mid-task and resume it, state intact, in under a second.
The fastest cloud browser, by 4×.
Against every other browser provider on Steel's own open-source benchmark. Create, connect, navigate, and release, measured end to end.
Launching a cloud browser
create → connect → navigate → release · ms · shorter is fasterThe fastest sandbox, end to end.
On the open-source nibzard benchmark, same heavy workload on every provider: create the machine, run the code, tear it down. Solari finishes the round trip first.
Full sandbox lifecycle
create + run + clean up · seconds · shorter is fasterReal VMs. Not containers.
Your sandboxes and computers each run as their own Cloud Hypervisor microVM, with a dedicated kernel and hardware-level isolation. That is the model AWS Lambda uses to run untrusted code, and a stronger boundary than container sandboxes that share the host kernel. Browsers run in their own hardened, locked-down slots, each with a dedicated user, a private profile, and no access to the host or its metadata.
Faster by design.
Warm machines, memory-snapshot restore, and fast paths tuned end to end. That is why a browser or a machine is ready in milliseconds instead of seconds, and why it holds up when a hundred start at once.
Give your agent the fastest place to act.
One API key. Browsers, sandboxes, and computers, ready in milliseconds. Free to start.