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Codeforces API vs Judge0 CE API

Two free Programming APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

  • Choose Codeforces API if its data fits your use case better; on access and reliability it's level with Judge0 CE API.
  • Choose Judge0 CE API if its data fits your use case better; on access and reliability it's level with Codeforces API.

Side by side

Codeforces APIJudge0 CE API
What it doesGet access to Codeforces data.Online code execution system. A free programming API by Judge0 CE.
Providercodeforces.comJudge0 CE
API keyRequiredRequired
HTTPSYesYes
CORS (browser calls)UnknownUnknown
Status todayOnline · 479 msOnline · 596 ms
Uptime (30 days)UpUp
Developer ratingNot rated yetNot rated yet
PriceFree / free tierFree / free tier
Codeforces docs ↗Judge0 CE docs ↗

About each API

How to choose between them

  • Prototyping or a tutorial? Pick the one that needs no API key (neither does, so compare their free tiers).
  • Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
  • Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
  • Still unsure? Both are free to try: send one request to each and compare the data you get back.

Codeforces vs Judge0 CE FAQ

Do Codeforces API and Judge0 CE API need an API key?

Both require authentication (apiKey and apiKey).

More comparisons

Codeforces API alternatives · Judge0 CE API alternatives · best Programming APIs