Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Rayyan records 1,116,437 monthly visits with +7.9% growth and Freemium pricing.
High-quality human data for AI training, evaluation, and research
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
| Dimension / Metric | ||
|---|---|---|
| Official Domain | prolific.com | rayyan.ai |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 1.12M (1,116,437) |
| MoM Traffic Delta | -352.04K (-1.8%) | +81.92K (+7.9%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (18%) |
| Direct Visits / mo | 12.98M | 677.88K |
| User Rating | 4.6 | 4.5 |
| 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.
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
The Systematic Auto-Resolver deduplicates up to 200,000 references using your own inclusion and exclusion protocol with one click.
ResearchPilot delivers zero-shot relevance ratings, an AI Analyzer, an AI Reviewer, and auto-extraction to speed up search, screening, and data capture.
Work through title, abstract, and full-text screening with inclusion and exclusion tagging, conflict resolution, and blinded reviewer modes.
Capture structured study data with configurable extraction fields, apply PICO frameworks, and export results with auto-generated PRISMA diagrams.
Free / Open-sourceProvides a completely free and open academic search database, but lacks collaborative literature review screening tools.
Free / Open-sourceProvides a completely free and open academic search database, but lacks collaborative literature review screening tools.
SpecialistGreat for finding scientific agreement and evidence-backed answers, but lacks dedicated screening queues and systematic review extraction forms.
SpecialistGreat for finding scientific agreement and evidence-backed answers, but lacks dedicated screening queues and systematic review extraction forms.
SpecialistExcellent for reading, chatting with, and summarizing individual papers, but less structured for multi-reviewer systematic review screening.
SpecialistExcellent for reading, chatting with, and summarizing individual papers, but less structured for multi-reviewer systematic review screening.
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.
Stronger automated data extraction and evidence synthesis from papers, but less focused on collaborative title and abstract screening workflows.
Stronger automated data extraction and evidence synthesis from papers, but less focused on collaborative title and abstract screening workflows.
SpecialistOffers powerful citation analysis and smart citation metrics, but is less tailored for full PRISMA systematic review workflows.
SpecialistOffers powerful citation analysis and smart citation metrics, but is less tailored for full PRISMA systematic review workflows.
SpecialistVisualizes citation networks and paper relationships wonderfully, but lacks Rayyan's screening, tagging, and exclusion tracking features.
SpecialistVisualizes citation networks and paper relationships wonderfully, but lacks Rayyan's screening, tagging, and exclusion tracking features.
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
SpecialistProvides intuitive visual maps of academic literature connections, but doesn't support systematic review screening or data extraction.
SpecialistProvides intuitive visual maps of academic literature connections, but doesn't support systematic review screening or data extraction.
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
Provides solid literature search and reference management tools, but lacks Rayyan's specialized collaborative screening interface.
Provides solid literature search and reference management tools, but lacks Rayyan's specialized collaborative screening interface.
