Blaxel
By Blaxel (YC)
Infrastructure platform for autonomous agents using microVMs that boot in milliseconds and resume in ~25ms with $0 idle cost.
Best for
- perpetual sandboxes
- fast resume
- microVM isolation
- agent infra
Other Sandboxes & code execution
E2B
Sandboxed cloud VMs purpose-built for AI agents — spin up a Linux environment in milliseconds, run untrusted code, throw it away.
Vercel Sandbox
Firecracker-based microVMs from Vercel for running untrusted code at the edge. Strong fit if you're already deploying on Vercel.
Modal
Serverless compute platform built for AI workloads — GPU jobs, ephemeral functions, and code sandboxes triggered from agents or webhooks.
Daytona
Cloud dev environments designed for AI agents. Each agent gets its own isolated, reproducible workspace it can install tools into.
Runloop
Secure code-execution sandboxes for AI agents with evaluation tooling and snapshot/checkpoint support, built for enterprise scale.
Northflank
Deployment platform offering secure sandboxes and microVMs (200ms spin-up) for running untrusted and AI-generated code at scale.
Beam
On-demand AI compute platform for running agent sandboxes, task queues and GPU workloads, with bring-your-own-cloud support.
Cloudflare Sandbox SDK
SDK for running untrusted and AI-generated code in isolated environments powered by Cloudflare Workers and Containers.