Judge0 CE
FreemiumLiveLast verified 24 Sept 2026
Sandboxed code execution and judging across 60+ languages, with compile/runtime status and resource limits.
Example request
curl -s 'https://ce.judge0.com/languages'
Free tier, in plain English
Read endpoints like the language list work without a key; running code costs money via RapidAPI plans starting at 2,000 submissions/day.