Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Realyst records 0 monthly visits with — growth and Free Trial pricing.
High-quality human data for AI training, evaluation, and research
Run instant rental-property math on any Zillow single-family listing
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | chrome.google.com |
| Pricing Model | Paid | Free Trial |
| Monthly Visits | 18.7M (18,697,671) | 0 (0) |
| MoM Traffic Delta | -352.04K (-1.8%) | 0 (—) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🌐 Global (—) |
| Direct Visits / mo | 12.98M | 0 |
| User Rating | 4.6 | 3.8 |
| Supported Platforms | Website | Browser Extension |
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.
Run instant rental-property math on any Zillow single-family listing
Tune rental rate, mortgage rate, vacancy rate and renovation estimates to see how each assumption moves cash-on-cash return and ROI.
Compare the projected profitability of up to 80 nearby single-family properties in a single click to spot the strongest candidates fast.
Five built-in AI prompts generate quick takes on renovation costs, market trends and other decision inputs that are awkward to look up manually.
Save results and export to CSV or PDF, and generate a homeowner/buyer summary that includes comps, neighbourhood and demographic context.
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.
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
AI-powered, zero-commission homebuying with a virtual agent
AI-powered, zero-commission homebuying with a virtual agent
SpecialistConnects AI labs with domain experts for data collection, but lacks a self-service marketplace for bulk academic study participants.
SpecialistConnects AI labs with domain experts for data collection, but lacks a self-service marketplace for bulk academic study participants.
SpecialistRuns automated user interviews and usability tests with real or synthetic personas, but lacks a massive human participant pool.
SpecialistRuns automated user interviews and usability tests with real or synthetic personas, but lacks a massive human participant pool.
