Prolific
by Prolific Academic Ltd
High-quality human data for research and AI.
Score
Score
Our verdict
Prolific is a pay-as-you-go human data platform that stands out for participant quality, precise targeting, and new AI-focused tooling. Access to 300k+ verified participants, 300+ filters, representative samples (no surcharge), and strong fraud controls deliver more reliable datasets than generic crowdsourcing sites. For AI teams, the Human Feedback API and Prolific MCP server enable programmatic evaluations and agentic workflows. Pricing is transparent but premium: corporate customers pay participant rewards plus a 42.8% platform fee (33.3% for academia/non-profits), and Prolific mandates hourly pay floors (£6/$8 minimum; £9/$12 recommended). There’s no free plan or trial, and you must pre-fund a wallet before launch. The vendor’s favorable terms—no charges for returns/timeouts/screen-outs and VAT on platform fees only—help, but costs add up on large studies or specialist cohorts. Overall, Prolific suits teams that prioritize data quality over rock-bottom cost.
Overview
Score breakdown
Overall score
Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.
Expert review
CBAI Editorial Team
Compare Best AI · Editorial Team
## Overview
How we tested
Days tested
7 days
Tasks evaluated
- ·Launch a representative sample study
- ·Collect AI evaluation judgments via Human Feedback API
- ·Use Audience Finder with 300+ filters
- ·Run a follow-up study and issue bonus payments
Method
Compared against Amazon Mechanical Turk and CloudResearch using identical inputs
Reviewer
CBAI Editorial Team
Plans & pricing
Corporate Pay-as-you-go
Commercial teams needing high-quality human data
- Participant rewards + 42.8% platform fee
- No subscription or contract
- Unlimited seats/users
- Representative samples included
- REST API and URL-based integration
- Not charged for returns, timeouts, or screened-outs
- VAT applies to platform fee only
- Example: $70 rewards → $100 total
Academia/Non-profit Pay-as-you-go
Academic and non-profit research
- Participant rewards + 33.3% platform fee
- Requires institutional email and correct account type
- No subscription or contract
- Unlimited seats/users
- Representative samples included
- Not charged for returns, timeouts, or screened-outs
- VAT applies to platform fee only
- Example: $70 rewards → $93.86 total
Managed Services
Complex projects needing hands-on delivery
- Full-service recruitment, study design and delivery
- Dedicated project team and Statement of Work
- Supports longitudinal and specialist audiences
- Platform fees apply to participant rewards and bonuses
Pricing may vary by region. Always verify on the vendor's website.
Feature comparison
| Feature | Prolific | Amazon Mechanical Turk | CloudResearch |
|---|---|---|---|
| Quality | |||
| 100% Human Guarantee | |||
| AI Data | |||
| Human Feedback API | |||
| Prolific MCP server (agentic collection) | |||
| Sampling | |||
| Representative samples (no surcharge) | |||
| Pricing | |||
| Academic/non-profit discounted fee | |||
| Access | |||
| Access to Prolific participant pool | |||
| Integrations | |||
| Official integrations (Maze, Gorilla, Alchemer) | |||
Is it right for you?
Good fit for
AI teams
Collect high-quality human judgments via the Human Feedback API and run agentic data workflows with MCP.
Academic researchers
Discounted platform fee, representative samples, and rigorous participant verification for publishable results.
UX researchers & PMs
Target precise audiences with 300+ filters and run longitudinal follow-ups without extra sampling fees.
Data scientists
Programmatically recruit and manage studies using the REST API and no-code URL integrations.
Less suited for
Ultra-low budgets
Mandated pay floors (min £6/$8 per hour; recommended £9/$12) set a hard cost baseline.
Non-core regions
Coverage concentrates in US/UK/EU; other regions may require custom sourcing.
Free-trial seekers
No free plan or free trial; wallet must be funded before launch.
User reviews
Editorial score
Distribution is estimated from our editorial score. Verified user reviews coming soon.
Use cases
Typical ways teams rely on this tool — from everyday tasks to specialized workflows.
- AI model evaluation
- Data labeling and RLHF
- Academic surveys
- UX and concept testing
- Longitudinal research
Integrations
Reported connectors
Apps and services commonly connected out of the box or via official connectors.
- Maze
- Gorilla
- Alchemer
Privacy & compliance
Security & data practices
Highlights we track from the vendor's documentation. Always confirm current terms, subprocessors, and regional policies on their official site.
- GDPR-ready
Details
Category
Price
- Free signup $0 (wallet must be funded
- no free trial)
- Platform (Corporate) participant rewards + 42.8% platform fee
- Platform (Academia/Non-profit) participant rewards + 33.3% platform fee (institutional email required)
- Managed Services custom (scoped per project)
Free version
Best for
- AI model evaluation and RLHF
- Academic and non-profit studies
- UX and product concept testing
- Longitudinal and follow-up research
Frequently asked questions
Prolific
Research & Data
Ready to get started?
Visit the Prolific website to explore plans and pricing.
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