
AI-powered talent marketplace connecting experts with frontier AI work

Codeaid records 2,647 monthly visits with -36% month-over-month growth and Freemium pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.

Coding assessments built for AI and ML engineers
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | codeaid.io | prolific.com |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 2.65K (2,647) | 18.7M (18,697,671) |
| MoM Traffic Delta | -1.49K (-36%) |
| -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (94.1%) | 🇺🇸 United States (48.8%) |
|---|
| Direct Visits / mo | 1.04K | 12.98M |
|---|
| User Rating | 4.1 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

Coding assessments built for AI and ML engineers
Challenges are generated per domain rather than pulled from a generic pool, covering deep learning, generative AI, NLP and computer vision alongside traditional ML.
The AI Interviewer helps create tailored assessments from expert-designed templates or from scratch, adjusting difficulty and scope in minutes.
Candidates work in interactive notebooks or containerised environments, so the test reflects how AI work is actually done rather than a whiteboard puzzle.
Submitted work is analysed automatically, with scoring on model accuracy and code quality, producing structured evaluation results.
High-quality human data for AI training, evaluation, and research
Filter participants by detailed demographic, professional, and behavioural criteria and reach narrow or representative samples rather than a generic crowd.
Collect human preference data for model fine-tuning, run safety evaluations and red-teaming, and use a feedback API to plug humans into automated pipelines.
Attention checks, honesty screening, and approval workflows help filter out careless or fraudulent responses before you analyse results.
Publish a study and begin collecting responses quickly, with tooling that supports screening, quotas, and longitudinal designs.

AI-powered talent marketplace connecting experts with frontier AI work


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Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Skills-based hiring platform for technical interviews, assessments and live coding
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
AI-powered candidate matching inside Arc's vetted remote-talent marketplace
SpecialistAI data infrastructure for building production-grade models
SpecialistSpecializes in video-based consumer interviews and AI qualitative analysis, but less focused on quantitative academic survey panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.