The world's fastest sandbox

The only agent-native compute runtime with a 25ms cold start. Blazing fast, brutally reliable.

OS-as-a-service, but for AI agents

From networking to software, everything in Blaxel Sandboxes is engineered for AI agents at scale.

World-class 25ms boot time

Run almost instantly with our industry-leading 25ms cold-starts, and scale to zero automatically after 1s inactivity.

Fully isolated

Execute any AI-generated or arbitrary code with zero risk of escaping.

Stateful VMs

Persist state across sessions, restoring sessions near-instantly even after weeks.

Handle filesystem change events

Get real-time events for any file or directory changes inside your sandbox, enabling event-driven automation and monitoring.

Stream logs

Stream logs live from your sandboxes for instant debugging, monitoring, and observability of your AI workloads.

Checkpointing (coming soon!)

Instantly roll back your sandbox to a previous state — perfect for when AI agents go rogue.

Custom domains

Set your own custom domain on a sandbox's preview URL.

Private & public previews

Set either a public or private URL on a sandbox's port to share its content with your users.

MCP server available

Blaxel Sandboxes are agent-native. Any MCP server to operate the sandbox is natively built with it so your agent can autonomously use it using tool calls.

Built for AI use cases

AI builders use sandboxes to power their AI products, from codegen agents to cloud-based evals.

Future-proof your AI strategy today.