
SpecialistOffers robust general HR and recruiting tools with native AI agents, but lacks Mercor's specialized expert network.
Mercor records 14,164,192 monthly visits with +34% month-over-month growth and Contact for Pricing pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.

AI-powered talent marketplace connecting experts with frontier AI work
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | mercor.com | prolific.com |
| Pricing Model | Contact for Pricing | Paid |
| Monthly Visits | 14.16M (14,164,192) | 18.7M (18,697,671) |
| MoM Traffic Delta | +3.59M (+34%) |
| -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (30.7%) | 🇺🇸 United States (48.8%) |
|---|
| Direct Visits / mo | 7.52M | 12.98M |
|---|
| User Rating | 4.4 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

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.
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.

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

Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.

SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
#3
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistSupplies enterprise AI training data and expert model evaluations, operating on the infrastructure side of AI labs.

Sources software professionals through Arc's vetted remote-talent marketplace using AI candidate matching.

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.


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

Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.


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


SpecialistOffers robust general HR and recruiting tools with native AI agents, but lacks Mercor's specialized expert network.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
SpecialistSupplies enterprise AI training data and expert model evaluations, operating on the infrastructure side of AI labs.
Sources software professionals through Arc's vetted remote-talent marketplace using AI candidate matching.
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.
SpecialistAutomates technical screening, video interviews, and candidate scheduling at enterprise scale.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
SpecialistCombines human expert technical interviewers with AI screening for rigorous engineering candidate evaluation.