Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Vellum records 331,901 monthly visits with -20.8% growth and Freemium, Paid pricing.
Battle-test AI coding models side by side
A private, memory-powered AI assistant you own and customize
| Dimension / Metric | | |
|---|---|---|
| Official Domain | arena.ai | vellum.ai |
| Pricing Model | Free | Freemium, Paid |
| Monthly Visits | 35.83M (35,827,928) | 331.9K (331,901) |
| MoM Traffic Delta | +5.83M (+19.4%) | -86.97K (-20.8%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (31.3%) |
| Direct Visits / mo | 24.34M | 70.21K |
| User Rating | 4.7 | 4.2 |
| 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.
A private, memory-powered AI assistant you own and customize
A custom-built memory system that retains you, your people, preferences and work across every conversation, rather than resetting each session.
Connect Google Workspace, Slack, Notion, your filesystem and community plugins so the assistant can send emails, manage calendars, browse, create slides and run research.
Set permissions so sensitive actions like emailing new contacts or modifying key files require approval until you mark them trusted.
Switch between OpenAI, Anthropic, Gemini or open-weight models via Ollama at any time, keeping you free of a single vendor lock-in.
Free / Open-sourceServes as a lightweight backend runtime for running local models, but requires a separate UI or client app.
Free / Open-sourceServes as a lightweight backend runtime for running local models, but requires a separate UI or client app.
SpecialistExcels at node-based workflow automation and agent orchestration, but is less focused on conversational assistant interactions.
SpecialistExcels at node-based workflow automation and agent orchestration, but is less focused on conversational assistant interactions.
Free / Open-sourceOffers autonomous personal agent capabilities with persistent memory, but requires more technical setup than Vellum.
Free / Open-sourceOffers autonomous personal agent capabilities with persistent memory, but requires more technical setup than Vellum.
Free / Open-sourceConnects local models directly to messaging apps for task automation, but lacks Vellum's polished desktop assistant interface.
Free / Open-sourceConnects local models directly to messaging apps for task automation, but lacks Vellum's polished desktop assistant interface.
Crowdsourced arena where AI models compete and humans crown the best design output
Crowdsourced arena where AI models compete and humans crown the best design output
Free / Open-sourceProvides visual workflow building and RAG pipelines, but is structured more as a developer platform than a personal assistant.
Free / Open-sourceProvides visual workflow building and RAG pipelines, but is structured more as a developer platform than a personal assistant.
Free / Open-sourceProvides a feature-rich self-hosted chat interface for local models, but lacks native background workflow automation.
Free / Open-sourceProvides a feature-rich self-hosted chat interface for local models, but lacks native background workflow automation.
Agent Skills that give your coding agent real design taste
Agent Skills that give your coding agent real design taste
Free / Open-sourceFocuses heavily on local document RAG and privacy-first chat, whereas Vellum emphasizes broader assistant workflows.
Free / Open-sourceFocuses heavily on local document RAG and privacy-first chat, whereas Vellum emphasizes broader assistant workflows.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders
Free / Open-sourceProvides a streamlined desktop app for running local models, but lacks advanced agent memory and workflow integrations.
Free / Open-sourceProvides a streamlined desktop app for running local models, but lacks advanced agent memory and workflow integrations.
