Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. MD.ai records 6,650 monthly visits with -11.2% growth and Contact for Pricing pricing.
AI-powered radiology reporting and DICOM-native medical imaging annotation
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arena.ai | md.ai |
| Pricing Model | Free | Contact for Pricing |
| Monthly Visits | 35.83M (35,827,928) | 6.65K (6,650) |
| MoM Traffic Delta | +5.83M (+19.4%) | -838 (-11.2%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (62.5%) |
| Direct Visits / mo | 24.34M | 2.6K |
| User Rating | 4.7 | 4.4 |
| 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-powered radiology reporting and DICOM-native medical imaging annotation
Automatic template selection, dictation-to-findings mapping, impression generation and proofreading inside a radiology reporting workflow.
Generates billing codes from the report and produces patient-friendly audio summaries for clearer communication and education.
HL7 and DICOM integration connects the reporting tool to existing clinical systems, with AI-driven or traditional reporting modes available.
Build labeled imaging datasets with native DICOM support, AI-assisted annotation, an FDA 510(k)-cleared viewer and elastic scaling.
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Free / Open-sourceOpen-source model and dataset hub with one-click online demos

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-sourceGuideline-directed medical answers with citations, built for clinicians
Free / Open-sourceGuideline-directed medical answers with citations, built for clinicians

Human-validated training data and evaluation services for frontier AI models

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

Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders
The multimodal data layer for computer vision and physical AI teams

Free / Open-sourceLabel any data. Evaluate any AI.

Free / Open-sourceGenerative AI for medical and everyday health questions
Free / Open-sourceGenerative AI for medical and everyday health questions
Community plugin, rule, and MCP server hub for Cursor
Community plugin, rule, and MCP server hub for Cursor

Free / Open-sourceAI analysis that turns X-rays, CT scans, MRI and ultrasound into plain-language reports
Free / Open-sourceAI analysis that turns X-rays, CT scans, MRI and ultrasound into plain-language reports