Blaxel is cloud infrastructure for autonomous AI agents. Its core unit is the sandbox: a microVM, which is a small virtual machine with its own operating system kernel, isolated from other workloads. An agent uses the sandbox as its own computer, and each microVM serves one agent, app or job.
A sandbox boots in milliseconds. When it is idle, Blaxel suspends it and keeps a snapshot of its memory and file system; it resumes in about 25 milliseconds with its full state. Developers create and control sandboxes through Python, TypeScript and Go SDKs or an HTTP API. Other products are batch jobs that spread thousands of tasks across sandboxes, private MCP servers, storage that lasts between runs (volumes and a shared Agent Drive), outbound network rules with static IP addresses, and a model gateway that gives one endpoint for many AI model providers.
It is a hosted service billed by use: active compute is charged per GB of memory per second, and suspended time costs nothing. New accounts get free credits; custom plans add private networking and the option to bring their own hardware.