Run real code.
Every submission runs on our own sandboxed execution engine - 60+ languages, with stdout / stderr captured and graded against your test cases.
Coding events,
judged correctly.
PythonC++JavaJavaScriptTypeScriptGoRustC#KotlinRubySwiftPHPCHaskellScalaPerlLuaRDartElixirClojureErlangF#FortranPascal
Collaborations
The organizations and communities we partner with to run their coding events on Code Arena.
ACM Student ChapterVIT Chennai
Submit. Judge. Rank.
Every submission is typed, sent to the sandbox, and graded test by test - then ranked on the leaderboard.
solution.py
$ waiting for submission…
From signup to scoreboard.
Three steps to your first submission, on infrastructure built to run the whole event - sandboxed grading, verified accounts, AI-prompt rounds, and tie-broken leaderboards.
01
Sign up
Create an account with your email and institution, then verify in one click.
02
Register for an event
Browse open events and register before the round goes live.
03
Submit & rank
Write code, submit, and watch the sandbox grade it against the test cases.
Verified accounts.
Sign up with your email + institution, verify in one click, and you're in. Admins keep the platform clean from spam accounts.
AI-prompt rounds.
Beyond classic coding questions, set AI-prompt challenges - participants engineer the prompt, the model writes the code, and the result is compiled and judged like any other submission.
Tie-broken leaderboards.
Rank by score, then total submissions, then sum of execution time. Reward correctness and efficiency together.
Ready to compete?
Sign up in 30 seconds, verify your email, browse open events, and start submitting.
Hosting events?
Organizations get their own console - create events, build question sets with AI, invite moderators, and manage participants end to end.