# Judge0

Judge0 is a cloud sandbox provider for AI agents; this page records its specs from the vendor's own docs.

GPL-3.0 code-execution engine covering more than 70 languages; self-host it or use the hosted service.

## Details

- Address: Online, Global
- Website: [judge0.com](<https://judge0.com>)
- Isolation: Process
- Persistence: Ephemeral
- Pricing model: Open source
- Free tier: Open source
- Open source: Yes
- Run it yourself: Yes
- Open-source licence: GPL-3.0
- Client SDKs: HTTP API
- Documentation: [ce.judge0.com](<https://ce.judge0.com>)

## Questions

### Where is Judge0?

Judge0 is at Online, Global.

### How do I contact Judge0?

To contact Judge0, visit https://judge0.com.

## Source

From [Vendor documentation and pricing pages, as described on our About page](https://github.com/judge0/judge0), license Fact-level data (prices, limits, isolation classes); open-licensed doc sets include Cloudflare docs (CC BY-4.0) and Fly.io docs (Apache-2.0), checked 2026-10-21.

Last updated October 21, 2026.

## Links

- This sandbox provider on the [web page](<https://agentsandboxes.fyi/global/online/judge0>)
- [Open source in Online](<https://agentsandboxes.fyi/global/online/category/open-source.md>)
- [Code execution in Online](<https://agentsandboxes.fyi/global/online/category/code-execution.md>)
- [More sandbox providers in Online](<https://agentsandboxes.fyi/global/online.md>)

> **Check before you choose.** Vendor specs and prices change. Follow the cited source on each listing before you pick a provider.