prolific.com
Prolific connects researchers with verified participants for data collection, charging a 42.8% corporate fee, with a new HUMAINE AI leaderboard in 2026.
About prolific.com
What is prolific.com (2026 update)
Prolific is a platform that connects researchers with verified human participants for surveys, experiments and AI data collection tasks. It is used both by academic researchers running studies and by AI companies that need real people to annotate, rate or generate training and evaluation data.
What is new in 2026
Prolific launched HUMAINE, a human-centered AI evaluation leaderboard that aggregates model comparisons from real participants rather than automated benchmarks, in December 2025 heading into 2026. The platform also tightened its identity verification, with each participant now completing more than 50 identity and behavioral checks to join the pool, a reported 55% pass rate, plus periodic video selfie checks to confirm identity on an ongoing basis. For AI-specific work, Prolific now lists over 11,000 participants with demonstrated skills in fact-checking, comparative reasoning, structured writing, and image, video and audio annotation or generation. New tools include Audience Builder for finding the right participant segment and Taskflow for splitting large datasets into micro-tasks, alongside API integrations meant to plug directly into AI development pipelines. Prolific also expanded its participant pool into Asia-Pacific, the Middle East, North Africa and Chinese expat communities to widen linguistic and cultural coverage.
Key features
- Verified participant pool with strict identity and behavioral screening
- Custom screeners so studies only reach the specific demographic or skill set you need
- HUMAINE leaderboard for human-rated AI model evaluation
- Audience Builder and Taskflow for structuring large-scale AI data collection
- API integrations for embedding participant data collection into AI workflows
- Pay-as-you-go model with no contract or subscription required
Pricing in 2026
| Plan | Price | What you get |
|---|---|---|
| Academic / non-profit | Participant reward + 33.3% platform fee | Pay participants directly plus a 33.3% fee on top of the reward amount, no contract required |
| Corporate | Participant reward + 42.8% platform fee | Same pay-as-you-go model at a 42.8% platform fee on top of participant rewards |
| Custom / Enterprise | check the official site | Larger-scale AI data programs, dedicated account support and API integration, priced per project |
Researchers must pay participants at least £6.00 / $8.00 per hour, though Prolific recommends £9.00 / $12.00 per hour or more. For example, a $70 participant reward costs a corporate customer about $100 total once the platform fee is added, versus about $93.86 for an academic or non-profit customer.
Who should use it
Prolific fits you if you are an academic researcher who needs a verified, demographically diverse participant pool for a study, or an AI team that needs real human raters and annotators for model evaluation, RLHF-style data, or content generation tasks. The pay-as-you-go pricing also suits one-off studies where a subscription platform would not make sense.
Limitations and alternatives
The platform fee is a real cost to budget for, 42.8% on top of participant pay for corporate customers is significant at scale, and strict verification, while good for data quality, can slow down recruitment for very fast-turnaround studies. If you need a much larger, less curated crowd for simple microtasks, Amazon Mechanical Turk is cheaper but with weaker verification. If your focus is specifically survey research rather than AI data work, SurveyMonkey Audience or Qualtrics panels are worth comparing on price and reach. Whichever platform you pick, run the numbers with the built-in pricing calculator before launching a large study, since the platform fee compounds fast once you scale past a small pilot batch of participants.
Frequently asked questions
How much does Prolific charge researchers?
Prolific adds a platform fee on top of what you pay participants: 42.8% for corporate customers and 33.3% for academic or non-profit customers. There is no separate subscription fee.
What is the minimum I have to pay participants on Prolific?
Prolific requires at least £6.00 / $8.00 per hour, and recommends £9.00 / $12.00 per hour or more for better response quality and speed.
What is HUMAINE on Prolific?
HUMAINE is a human-centered AI evaluation leaderboard Prolific launched around December 2025, aggregating real participant comparisons of AI models rather than relying only on automated benchmarks.
What are alternatives to Prolific?
Amazon Mechanical Turk offers a larger, cheaper crowd for simple microtasks with weaker verification, while SurveyMonkey Audience or Qualtrics panels are worth comparing if your need is survey research rather than AI data collection.
Information last verified: September 2026.
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