Backed by Y CombinatorThe persistent
sandbox platform
Blaxel lets you keep infinite, secure sandboxes on automatic standby, while co-hosting your agents and context for near instant latency.
TRUSTED BY AI BUILDERS FROM HIGH GROWTH COMPANIES
> Stop treating sandboxes as ephemeral runners. Truly intelligent AI agents should be able to have access to their own computers_
The first sandbox that sleeps, but never dies
Give a computer to your agent
Run AI code in secure environments that wait on standby indefinitely when not used, eliminating cold starts without complex orchestration. Instantly scale to 50,000+ concurrent machines.
Discover Sandboxes┌─ SANDBOX ─────────────────────────────────┐│ ││ ID sbx-a7f3 ││ STATUS ● RUNNING ││ MEMORY 256 MB ████████░░░ 78% ││ PROCESS node index.js PID 1 ││ UPTIME 02:41:07 ││ │├── LIFECYCLE ──────────────────────────────┤│ ││ > idle detected (15s) ││ > snapshot: memory ............. done ││ > snapshot: filesystem ......... done ││ ││ STATUS ◐ STANDBY $0/hr ││ ││ ... 72 hours pass ... ││ ││ > resume signal received ││ > restoring snapshot ........... done ││ STATUS ● RUNNING 25ms ││ > process intact: PID 1 ││ │└───────────────────────────────────────────┘
Auto-suspend sandboxes when they're not used. Persist forever.
Our flagship lifecycle handler automatically scales sandboxes to zero when idle, with a full memory + filesystem snapshot. Keep infinite sandboxes in standby forever. Resume instantly with identical process state.
World-class 25ms boot times
Blaxel Sandboxes resume from standby in ~25ms with full memory state. Filesystem runs in memory, for unbeatable performance for almost all sandbox operations.
Retain context and data for years
Block-storage based volumes let you retain data for years with a fully redundant solution. Fork templates for pre-populated volumes.
Deeply customizable network for your workloads
Set up preview URLs with custom domains managed by Blaxel, order dedicated IPs for sandbox egress traffic, and connect workloads to your own VPC.
All features of Blaxel Sandboxes
Run agents right next to their computers
Co-host the agent loop, MCP servers, and batch tasks directly alongside your sandboxes and volumes to eliminate network hops and ensure the lowest possible end-to-end latency.
Discover Hosting┌─ BACKBONE ────────────────────────────────┐ │ │ │ ┌───────────┐ │ │ │ AGENT │ │ │ │ ● live │ │ │ └─────┬─────┘ │ │ <1ms │ <1ms │ │ ┌────────┴────────┐ │ │ │ │ │ │ ┌────┴──────┐ ┌──────┴────┐ │ │ │ SANDBOX │ │ MCP SRV │ │ │ │ ● live │───│ ● live │ │ │ └───────────┘ └───────────┘ │ │ <1ms │ │ │ │ ~> colocated on same backbone │ │ ~> zero network hops │ │ ~> local-like latency │ │ │ └─────────────────────────────────────────────┘
Colocate your agents for ultra low latency
Host agents made with any framework on the same backbone as their sandboxes to achieve local-like network latency.
Run batch jobs on our elastic backbone
Spawn thousands of jobs in individual sandboxes in seconds with Blaxel SDK. Instant scale on demand.
Host MCP servers close to your agents
Run remote MCP servers alongside the agent loop and sandboxes, fully HTTP stream compatible.
Get end-to-end telemetry
Get 360° visibility on your agents and their tools throughout Blaxel with a modern AI-native observability suite.
Built for scale and security
Hardened security and elastic infrastructure designed to support your most demanding AI workloads while maintaining total control.
Discover our compliance portal
Enterprise-grade security & compliance
Built with security-first architecture and certified compliance standards to meet the most stringent enterprise requirements.
Region support
Choose deployment regions for local data residency. Europe and US regions available.
Zero data retention
Each sandbox runs in an individual microVM with the root filesystem in memory, so all data is wiped forever when the sandbox is destroyed.
Instantly scale to 50,000+ sandboxes
Scale up to 50,000+ sandboxes or agents, and up to 512 TB of volume storage with a tier-based quota system.