
Get paid to train the next generation of AI models
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. Ocular AI records 8,852 monthly visits with +100.6% growth and Freemium, Contact for Pricing pricing.

Turn human expertise into frontier-grade AI training data
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | arena.ai | useocular.com |
| Pricing Model | Free | Freemium, Contact for Pricing |
| Monthly Visits | 35.83M (35,827,928) | 8.85K (8,852) |
| MoM Traffic Delta | +5.83M (+19.4%) | +4.44K (+100.6%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇺🇸 United States (93.3%) |
| Direct Visits / mo | 24.34M | 3.61K |
| 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.

Turn human expertise into frontier-grade AI training data
A purpose-built engine that converts raw expert input — audio, video, text and decisions — into structured training data, alignment signals and evaluation sets at scale.
A global workforce of domain specialists, linguists, researchers and voice actors who generate the human judgment that synthetic data cannot approximate.
Open leaderboards for conversational speech-to-text (WER/CER) and speaker diarization (DER), published with technical reports, datasets and an open-source harness.
Preference data, rewards and task environments plus rubrics so teams can fine-tune and post-train models on realistic, expert-graded behavior.

Get paid to train the next generation of AI models

Crowdsourcing data services for AI training and market data

Hire tested AI trainers and data labelers for RLHF, evaluation, and annotation
Hire tested AI trainers and data labelers for RLHF, evaluation, and annotation

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

Free AI hackathons and a global community for AI builders
Free AI hackathons and a global community for AI builders

SpecialistExpert human data and evaluation for training frontier AI

Free / Open-sourceOpen-source database of AI models, prices and capabilities
Free / Open-sourceOpen-source database of AI models, prices and capabilities
Free / Open-sourceCommunity hub for data science, machine learning and AI practitioners
Free / Open-sourceCommunity hub for data science, machine learning and AI practitioners
Community plugin, rule, and MCP server hub for Cursor
Community plugin, rule, and MCP server hub for Cursor

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