Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Verificient records 66,118 monthly visits with -5.2% growth and Contact for Pricing pricing.
High-quality human data for AI training, evaluation, and research
Biometric identity verification and AI-powered remote exam proctoring
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | verificient.com |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 18.7M (18,697,671) | 66.12K (66,118) |
| MoM Traffic Delta | -352.04K (-1.8%) | -3.64K (-5.2%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (51.5%) |
| Direct Visits / mo | 12.98M | 40.18K |
| User Rating | 4.6 | 3.8 |
| Supported Platforms | Website | Website |
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.
Biometric identity verification and AI-powered remote exam proctoring
A baseline profile is built from face, ID and knuckle scans at session entry, then re-checked against the test-taker throughout the exam.
Proctortrack monitors sessions without scheduling, using computer vision and machine learning to flag policy violations at scale.
ProctorDIY adds do-it-yourself live human proctoring for K-12, while Proctortrack can combine automation with live proctors for high-stakes exams.
ProctorTA temporarily converts student laptops into secure testing terminals, blocking unauthorized websites, applications and system functions.
Free / Open-sourceAI detection and writing verification built for schools and editors
Free / Open-sourceAI detection and writing verification built for schools and editors
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
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
SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.
SpecialistAI data infrastructure for building production-grade models
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.
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.
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.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free / Open-sourceJob-simulation skill assessments for the AI hiring era
Free / Open-sourceJob-simulation skill assessments for the AI hiring era
Global identity verification, KYC/AML compliance and fraud prevention
Global identity verification, KYC/AML compliance and fraud prevention
End-to-end certification platform built by psychometricians
End-to-end certification platform built by psychometricians
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
