Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Spline records 588,316 monthly visits with -6.1% growth and Freemium pricing.
Battle-test AI coding models side by side
Browser-based 3D design and animation with real-time team and AI agent collaboration
| Dimension / Metric | | |
|---|---|---|
| Official Domain | arena.ai | spline.design |
| Pricing Model | Free | Freemium |
| Monthly Visits | 35.83M (35,827,928) | 588.32K (588,316) |
| MoM Traffic Delta | +5.83M (+19.4%) | -38.1K (-6.1%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇮🇳 India (18.3%) |
| Direct Visits / mo | 24.34M | 212.69K |
| User Rating | 4.7 | 4.7 |
| 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.
Browser-based 3D design and animation with real-time team and AI agent collaboration
Model with primitives, booleans and sculpting, and use 3D generation to create objects from prompts.
Apply layered materials, lights and post-processing effects to give scenes a polished, production-ready look.
Build interactivity using states, keyframes, events and physics so scenes respond to scroll, hover and other triggers.
Connect AI coding agents to read, write and frame the live scene, then refine the same file by hand with your team.
Generates 3D assets rapidly from text or images, but focuses on object creation rather than interactive web scene composition.
Generates 3D assets rapidly from text or images, but focuses on object creation rather than interactive web scene composition.
Produces highly detailed 3D models from 2D references, but provides fewer interactive scene building and animation tools than Spline.
Produces highly detailed 3D models from 2D references, but provides fewer interactive scene building and animation tools than Spline.
SpecialistThe pro website builder with a design agent on a fully editable canvas
SpecialistThe pro website builder with a design agent on a fully editable canvas
Free / Open-sourceNode-based visual AI studio for images, video, 3D and audio
Free / Open-sourceNode-based visual AI studio for images, video, 3D and audio
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
Agent Skills that give your coding agent real design taste
Agent Skills that give your coding agent real design taste
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Converts multimedia into textured 3D models with animation support, but offers less control over custom web interactivity.
Converts multimedia into textured 3D models with animation support, but offers less control over custom web interactivity.
Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders
Offers parametric 3D model generation for rapid prototyping, but lacks Spline's freeform vector modeling and interactive web animation canvas.
Offers parametric 3D model generation for rapid prototyping, but lacks Spline's freeform vector modeling and interactive web animation canvas.
Community plugin, rule, and MCP server hub for Cursor
Community plugin, rule, and MCP server hub for Cursor
Delivers production-ready 3D assets with automated retopology, but lacks Spline's interactive web design and real-time state management.
Delivers production-ready 3D assets with automated retopology, but lacks Spline's interactive web design and real-time state management.
