Challenge developers worldwide. Solve the same problem. First correct solution wins.Pure skill. Pure speed. Pure coding.
No credit card required. Start competing in seconds.
Everything you need to get started is free. Upgrade when you're ready.
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$9.00 / month
Everything you need to sharpen your coding skills through competition
Get matched with an opponent in seconds. Code side-by-side in real-time. See results instantly when you submit.
Both players receive the identical problem at the exact same moment. Race to submit first.
Your ELO ranking reflects your true coding ability. Climb the leaderboard.
Anti-cheat monitors tab switches and copy-paste to keep battles honest.
Simple. Fast. Competitive.
Choose your battle mode or join the queue. Get matched with a developer at your skill level.
Both players get the same problem. Race to submit the first working solution.
First correct solution takes the victory. Simple. Clean. Competitive.
Join the arena where the fastest coders rise to the top.
No downloads required • Battle in your browser