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Practice, 1v1, AI builder, puzzle rush, AI tutor.
Classrooms for your CS course, free during pilot.
Evidence-linked assessments, with public access by waitlist only.
Every plan can build any question type. Paid plans add an unlimited quiz library, Rena hints, AI generation, branding, and bigger roster limits.
For trying it with a class.
For a working instructor.
For power users and departments.
AI help for your students has a monthly fair-use limit. We email you before a class reaches it.
Have a coupon code?
Redeem classroom access from your department or pilot program. No checkout.
Buy seat bundles with separate student and educator buckets, a domain allowlist, and invite codes. A seat is only consumed when someone redeems it. We'll size the bundle to your program and handle billing directly.
Every plan, including Free, can author any question type.
Month-to-month or yearly. Export your data whenever you like.
Plagiarism-resistant runs, live progress, auto-grading on 8,000+ problems.