Practice, 1v1, puzzle rush, AI tutor.
Classrooms for your CS course, free during pilot.
Agentic assessments with proctoring, analytics, and ATS hooks.
From casual practice to professional development, find the perfect plan to accelerate your coding journey.
Billed annually at $119.90
Billed annually at $259.90
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Redeem a free year of Ultimate. No checkout, no credit card.
| Features | Free | Pro | Ultimate |
|---|---|---|---|
| Battles & match insights | |||
| Unlimited Battles | |||
| AI Analysis | 3 / mo | Unlimited | Unlimited |
| Expert Solutions After Matches | |||
| Opponent Solutions | |||
| Match Replay & Keystroke Reconstruction | — | Unlimited | Unlimited |
| Rena: your AI coach | |||
| Rena: Chat | — | 30 / mo | Unlimited |
| Rena: Mock Interview | — | 8 / mo | Unlimited |
AlgoArena has three plans. Free is $0 forever and covers unlimited battles, practice problems, and the ranked ladder. Pro is $11.99/month and adds unlimited AI Analysis, Rena chat, mock interviews, and expert and opponent solutions after matches. Ultimate is $25.99/month and makes Rena chat and mock interviews unlimited for interview crunch. Yearly billing on either paid plan gives you about two months free.
Yes. The free plan is $0 forever with no credit card, and it includes unlimited battles, practice problems, the ranked ladder, and 3 AI Analyses of your solutions per month. Rena chat and mock interviews live on the paid plans, but you can compete and practice as much as you want without paying.
Rena is AlgoArena's built-in AI coach. It chats through problems with you as you solve them and runs full mock interviews so you can practice out loud before a real one. Rena chat (30 conversations per month) and mock interviews (8 per month) come with Pro, and Ultimate makes both unlimited. The free plan still gets AI Analysis, automated feedback on your solutions after a match.
Both paid plans include a one week free trial, so you can try Pro or Ultimate before you pay. Start it from any paid plan above. The free plan itself never expires, so you can keep using AlgoArena's core features for as long as you like.
There are two paths. If your school, bootcamp, or club hands out an AlgoArena institution access code, you can redeem a free year of Ultimate right on this page, with no checkout and no credit card. If you teach a CS course, AlgoArena Classroom gives you live sessions, question variants, and per-student progress, and it is free during the current pilot. See classroom pricing at /classroom/pricing.
Yes! You can upgrade or downgrade your plan at any time. Changes take effect immediately.
We accept all major credit cards (Visa, MasterCard, American Express) through our secure Stripe payment processor.
Absolutely. No contracts or cancellation fees. You can cancel your subscription anytime.
Join our growing community of developers who are sharpening their algorithms and climbing the leaderboards.