
SpecialistOffers robust general HR and recruiting tools with native AI agents, but lacks Mercor's specialized expert network.
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Mercor records 14,164,192 monthly visits with +34% growth and Contact for Pricing pricing.

AI-powered talent marketplace connecting experts with frontier AI work
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | arena.ai | mercor.com |
| Pricing Model | Free | Contact for Pricing |
| Monthly Visits | 35.83M (35,827,928) | 14.16M (14,164,192) |
| MoM Traffic Delta |
| +5.83M (+19.4%) |
| +3.59M (+34%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (30.7%) |
|---|
| Direct Visits / mo | 24.34M | 7.52M |
|---|
| 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 talent marketplace connecting experts with frontier AI work
Machine-learning models screen and match candidates to remote roles in hours rather than weeks, based on skills, experience and availability.
AI-driven interviews and assessments validate professional expertise before experts are surfaced to hiring partners.
Experts work on flexible, remote projects with rates reported to average around $90 per hour and fast, recurring payouts.
Mercor collaborates with enterprises to design benchmarks such as legal, accounting and software-engineering evaluations for AI agents.

SpecialistOffers robust general HR and recruiting tools with native AI agents, but lacks Mercor's specialized expert network.

Crowdsourced arena where AI models compete and humans crown the best design output
SpecialistSupplies enterprise AI training data and expert model evaluations, operating on the infrastructure side of AI labs.
#3
Agent Skills that give your coding agent real design taste

Sources software professionals through Arc's vetted remote-talent marketplace using AI candidate matching.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills

Free AI hackathons and a global community for AI builders

SpecialistAutomates technical screening, video interviews, and candidate scheduling at enterprise scale.

SpecialistCombines human expert technical interviewers with AI screening for rigorous engineering candidate evaluation.

Community plugin, rule, and MCP server hub for Cursor

SpecialistProvides proctored skill assessments and coding IDE environments for evaluating technical candidates.

Benchmark computer- and phone-use AI agents with blind head-to-head battles

SpecialistOffers robust general HR and recruiting tools with native AI agents, but lacks Mercor's specialized expert network.
Crowdsourced arena where AI models compete and humans crown the best design output
SpecialistSupplies enterprise AI training data and expert model evaluations, operating on the infrastructure side of AI labs.
Agent Skills that give your coding agent real design taste
Sources software professionals through Arc's vetted remote-talent marketplace using AI candidate matching.
Free / Open-sourceSearch and study millions of public SKILL.md agent skills
Free AI hackathons and a global community for AI builders
SpecialistAutomates technical screening, video interviews, and candidate scheduling at enterprise scale.
SpecialistCombines human expert technical interviewers with AI screening for rigorous engineering candidate evaluation.
Community plugin, rule, and MCP server hub for Cursor
SpecialistProvides proctored skill assessments and coding IDE environments for evaluating technical candidates.
Benchmark computer- and phone-use AI agents with blind head-to-head battles