
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. RFPG records 0 monthly visits with — growth and Freemium pricing.

Scan a property with your phone, get a costed refurb deal pack
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prolific.com | rfpg.ai |
| Pricing Model | Paid | Freemium |
| 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 | 4.2 |
|---|
| 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.

Scan a property with your phone, get a costed refurb deal pack
Walk around a property with any phone (iPhone 12 Pro or later Pro for LiDAR-based depth accuracy) to capture the scan.
Get refurbishment costs broken down by room and trade, with a materials list and schedule of works.
Receive a PDF with over 40 data points including deal maths, your maximum offer, and value estimates.
Sold-price comparables from HM Land Registry and area average rent from ONS with gross yield calculations.

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
#2
Enterprise-grade data annotation and AI alignment workforce, but less self-serve for academic study recruitment and casual surveys.


AI property data, skip tracing and direct mail for real estate investors

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.


All-in-one real estate wholesaling platform with free skip tracing and AI deal automation

SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.


The AI-powered real estate media workflow — book, edit, deliver, and get paid

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


AI takeoff and estimating software built around real construction drawings

AI plan review and permitting software for cities and design teams
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
AI property data, skip tracing and direct mail for real estate investors
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.
All-in-one real estate wholesaling platform with free skip tracing and AI deal automation
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
The AI-powered real estate media workflow — book, edit, deliver, and get paid
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
AI takeoff and estimating software built around real construction drawings
AI plan review and permitting software for cities and design teams