Judge0 CE

judge0.com

An open-source online code execution system with an HTTP JSON API for running code in a sandboxed environment across 60+ programming languages.

The Judge0 CE API has freemium pricing; offers a free tier (Open-source and self-hostable at no cost); rate limits: Cloud plan limits: 2000/5000/10000 submissions per day depending on tier. Verified 2026-07-08 with per-field source links.

Other Verified 2026-07-08 medium confidence

Base URL

https://ce.judge0.com/

github.com ↗

Auth

not documented null

no source

Free tier

Open-source and self-hostable at no cost

judge0.com ↗

Pricing model

freemium

judge0.com ↗

Pricing

Self-hosted free; Cloud tiers: Pro €27/mo (2000 submissions/day), Ultra €54/mo (5000/day), Mega €107/mo (10,000/day), €0.001 per extra submission

judge0.com ↗

Rate limits

Cloud plan limits: 2000/5000/10000 submissions per day depending on tier

judge0.com ↗

OpenAPI spec

not documented null

no source

MCP server

not documented null

no source