
SpecialistShare and access study materials worldwide — with AI study tools built in
#1Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Gizmo records 9,273,984 monthly visits with +18.2% growth and Freemium pricing.
AI flashcards that turn note dumps and PDFs into addictive quiz sessions
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arena.ai | gizmo.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 35.83M (35,827,928) | 9.27M (9,273,984) |
| MoM Traffic Delta | +5.83M (+19.4%) |
| +1.42M (+18.2%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇵🇭 Philippines (31.3%) |
|---|
| Direct Visits / mo | 24.34M | 5.7M |
|---|
| User Rating | 4.7 | 4.3 |
|---|
| Supported Platforms | Website | Website |
|---|

Battle-test AI coding models side by side
Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
Watch models construct web apps and websites live, so you can see process and output, not just the final file.
Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
Track which coding models accumulate the most wins over time to identify consistently strong performers.
AI flashcards that turn note dumps and PDFs into addictive quiz sessions
Turn notes, PDFs, PowerPoint slides and YouTube videos into ready-to-quiz flashcards without writing cards by hand.
Automatic scheduling resurfaces cards right before you would forget them, so review time goes where it is needed.
Answer-first quizzing with instant feedback instead of passive re-reading, reinforcing long-term retention.
Streaks, points and social study sessions keep motivation high and make daily review a habit.

SpecialistShare and access study materials worldwide — with AI study tools built in
#1Offers robust flashcard creation and practice tests, but with a stronger focus on free study tools.

Provides comprehensive AI tutoring and course material conversion, but features a more structured video-explainer interface.

Crowdsourced arena where AI models compete and humans crown the best design output

Converts course materials into flashcards and mind maps, though its interface emphasizes visual conceptual learning over gamification.

SpecialistTurn any material into visual study sets, flashcards and quizzes

Excels at summarizing extensive lecture notes and videos into study guides, though its flashcard gamification is simpler.

Agent Skills that give your coding agent real design taste
Transforms various notes and videos into structured summaries and quizzes, offering a clean, straightforward study experience.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills

Free AI hackathons and a global community for AI builders
Specializes in converting study files directly into Anki-compatible decks, ideal for dedicated spaced-repetition users.
SpecialistShare and access study materials worldwide — with AI study tools built in
Offers robust flashcard creation and practice tests, but with a stronger focus on free study tools.
Provides comprehensive AI tutoring and course material conversion, but features a more structured video-explainer interface.
Crowdsourced arena where AI models compete and humans crown the best design output
Converts course materials into flashcards and mind maps, though its interface emphasizes visual conceptual learning over gamification.
SpecialistTurn any material into visual study sets, flashcards and quizzes
Excels at summarizing extensive lecture notes and videos into study guides, though its flashcard gamification is simpler.
Agent Skills that give your coding agent real design taste
Transforms various notes and videos into structured summaries and quizzes, offering a clean, straightforward study experience.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free AI hackathons and a global community for AI builders
Specializes in converting study files directly into Anki-compatible decks, ideal for dedicated spaced-repetition users.