Prolific
Research platform connecting AI developers with verified human participants for data collection.
Pricing
About Prolific
Prolific is a research platform that connects AI developers, researchers, and organizations with a vetted pool of 300,000+ human participants to collect high-quality data for AI training, evaluation, and research purposes. The platform enables researchers to post studies, run surveys, and gather human feedback on AI models for alignment, preference tuning, and safety evaluations. Participants are ID-verified and undergo a practice task to ensure data quality. The platform serves both AI/ML developers requiring human feedback for model training and academic researchers conducting behavioral studies. Prolific emphasizes representative sampling with 300+ demographic filters and claims researchers can complete datasets in under 2 hours on average. One limitation is that researchers must factor in the cost of paying participants plus Prolific's platform fee, which may increase research budgets.
At a glance
- Company
- Prolific
- Platforms
- Web
- API
- Available
- Last verified
- June 2026
★Among the most viewed AI tools in Education & Research — ranked #5 of 305.
Who It's For
- •AI and ML developers
- •LLM companies and AI safety researchers
- •Academic researchers and universities
- •Market and user research teams
- •Product teams needing human feedback
- •AI governance and policy organizations
How It Works
- 1Researchers or AI developers create a study or data collection task through the platform
- 2The request is distributed to Prolific's pool of 300,000+ verified participants
- 3Participants complete studies, surveys, or provide feedback on their dashboard
- 4Researchers receive completed responses and can export the data
- 5Data can be integrated into AI workflows via API or connected tools
How to Use Prolific
- 1Sign up as a researcher or participant account
- 2Researchers define study parameters, demographics needed, and compensation
- 3Participants browse available studies and select those matching their interests
- 4Complete the task or survey (takes 15 minutes to verify identity for new participants)
- 5Researchers receive data and can download or integrate results via API
Key Features
- •300,000+ ID-verified participants
- •300+ demographic filters for targeted participant selection
- •API integration and tool connectivity
- •HUMAINE framework for LLM evaluation
- •Representative sampling across 70+ countries
- •Quick turnaround (datasets in under 2 hours average)
- •Human Feedback API for AI model training
- •Managed Services for complex studies
- •Domain Experts pool for specialized research
Use Cases
- •Training and aligning large language models with human feedback and preference data
- •Running AI safety evaluations and benchmarking LLM outputs with representative human perspectives
- •Conducting academic research on human behavior, decision-making, and environmental choices
- •Market research and user feedback collection for product teams
- •Collecting demographic-diverse data for AI model evaluation and bias testing
Pros & Cons
Advantages
- •Fast turnaround with datasets available in under 2 hours on average, significantly reducing research timelines
- •Large verified participant pool (300,000+) with ID-verification ensures higher data quality than unvetted sources
- •Flexible targeting with 300+ demographic filters enables representative sampling across populations and geographies
- •Direct API integration and tool connectivity support seamless workflows for AI model training and evaluation
Disadvantages
- •Cumulative costs of participant payments plus platform fees can become expensive for large-scale or repeated studies
- •Limited to the participant pool Prolific maintains; researchers cannot add their own proprietary participant groups
- •Dependent on participant attention and honesty; quality still relies on human input and may vary by study design
Alternatives
See all Prolific alternatives →- LAION
- Elicit
- ResearchRabbit
- Amazon Mechanical Turk
- Respondent.io
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Frequently Asked Questions
What is Prolific?
Prolific is a research platform that connects AI developers, researchers, and organizations with a vetted pool of 300,000+ human participants to collect high-quality data for AI training, evaluation, and research purposes. The platform enables researchers to post studies, run surveys, and gather human feedback on AI models for alignment, preference tuning, and safety evaluations.
How much does Prolific cost?
Prolific is free to use.
Is Prolific free?
Yes, Prolific offers a free plan you can start with.
What are the best Prolific alternatives?
Popular Prolific alternatives include LAION, Elicit, ResearchRabbit.
What is Prolific used for?
Prolific is commonly used for Training and aligning large language models with human feedback and preference data, Running AI safety evaluations and benchmarking LLM outputs with representative human perspectives, Conducting academic research on human behavior, decision-making, and environmental choices.
Does Prolific have an API?
Yes, Prolific offers an API for developers.
What platforms does Prolific support?
Prolific is available on Web.
Information Accuracy
Please note: While we regularly update all tool information including descriptions, features, pricing, and other details, this information may change over time as tools evolve and update their offerings. For the most current and accurate information, we recommend visiting the official website directly. Our goal is to provide you with comprehensive and up-to-date information to help you make informed decisions.