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Prolific

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Research participant marketplace that gives AI teams and academics fast access to verified, screened human data and feedback.

What it does

Prolific is a platform connecting researchers and AI teams with over 300,000 verified participants for surveys, studies, and human-feedback data collection. It supports self-serve pay-as-you-go access with audience filters and quota sampling, as well as fully managed data-collection services with dedicated quality assurance for AI training and evaluation.

How to use: Researchers can sign up, set up tasks or studies on the self-serve platform, define their target audience from a pool of 200k+ active participants, and launch their research. Participants can sign up to take part in interesting tasks and earn cash.

Core features

300,000+ verified, screened participants
300+ audience targeting filters
Representative and quota-based sampling
API and no-code survey tool integrations
AI-powered participant quality monitoring (Protocol)
Managed services with dedicated project teams
Access to vetted domain experts

Best for

Collecting human preference data for RLHF or model evaluation
Running academic behavioral or market research studies
Sourcing domain-expert data for specialized AI benchmarks
Toolspool rankingby monthly traffic

Reviews

Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.