Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. You.com records 948,349 monthly visits with +7% growth and Freemium pricing.
High-quality human data for AI training, evaluation, and research
Search and inference APIs that give AI models real-time web data
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | you.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 948.35K (948,349) |
| MoM Traffic Delta | -352.04K (-1.8%) | +61.92K (+7%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (24.5%) |
| Direct Visits / mo | 12.98M | 639.15K |
| User Rating | 4.6 | 4.4 |
| 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.
Search and inference APIs that give AI models real-time web data
Ranked web and news results returned in around 0.4 seconds at p50, with highlights, knowledge, extraction and domain filters for production RAG workloads.
Submit URLs you already have and get back clean Markdown or HTML per page, priced per page returned rather than per request.
Answer returns a cited response in one call, while Research plans, reads full pages and cross-references sources across five depth tiers.
One OpenAI-compatible chat completions API that runs leading open-weight models with automatic multi-provider failover.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
SpecialistExceptional consumer answer engine with verified citations, but less flexible raw developer API data feeds.
SpecialistExceptional consumer answer engine with verified citations, but less flexible raw developer API data feeds.
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.
Includes cloud browser automation and live fetching for web agents, but less optimized for traditional textual search queries.
Neural web search API specifically engineered for LLM agents, but offers less consumer chatbot interface polish.
Bundles deep research crawling and search into a developer API, but lacks generalized multi-model inference endpoints.
Bundles deep research crawling and search into a developer API, but lacks generalized multi-model inference endpoints.
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
SpecialistPowerful enterprise neural search and discovery platform, but focuses more on internal site search than live web retrieval.
SpecialistPowerful enterprise neural search and discovery platform, but focuses more on internal site search than live web retrieval.
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.
SpecialistThe managed vector database and knowledge engine for production AI
