Best code-execution sandbox for running AI-generated code

Verified 2026-07-26

1. 1
   Blaxel AI code-execution sandbox

   microVM · 25ms cold start · $0.083/vCPU-hr

   Details →
2. 2
   Cloudflare Sandbox SDK AI code-execution sandbox

   V8 isolate + container · 50ms cold start · $0.072/vCPU-hr

   Details →
3. 3
   Daytona AI code-execution sandbox

   Docker container · 90ms cold start · $0.05/vCPU-hr

   Details →
4. 4
   E2B AI code-execution sandbox

   Firecracker microVM · 150ms cold start · $0.05/vCPU-hr

   Details →
5. 5
   Northflank AI code-execution sandbox

   Kata / gVisor microVM (selectable) · 300ms cold start · $0.01667/vCPU-hr

   Details →
6. 6
   Fly.io Machines AI code-execution sandbox

   microVM · 300ms cold start · $0.07/vCPU-hr

   Details →
7. 7
   Vercel Sandbox AI code-execution sandbox

   Firecracker microVM · 400ms cold start · $0.128/vCPU-hr

   Details →
8. 8
   Runloop AI code-execution sandbox

   microVM · 400ms cold start · $0.108/vCPU-hr

   Details →
9. 9
   CodeSandbox SDK AI code-execution sandbox

   Firecracker microVM · 500ms cold start · $0.05/vCPU-hr

   Details →
10. 10
    Modal AI code-execution sandbox

    gVisor · 800ms cold start · $0.14/vCPU-hr

    Details →

Rankings reflect published specs as of the verified date and are not paid placements. Corrections welcome at [email protected].