Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Purpose records 190,862 monthly visits with -22.9% growth and Free Trial pricing.
High-quality human data for AI training, evaluation, and research
An AI personal mentor for goals, clarity, habits and personal growth
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | purpose.app |
| Pricing Model | Paid | Free Trial |
| Monthly Visits | 18.7M (18,697,671) | 190.86K (190,862) |
| MoM Traffic Delta | -352.04K (-1.8%) | -56.82K (-22.9%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (24.5%) |
| Direct Visits / mo | 12.98M | 126.77K |
| User Rating | 4.6 | 4.2 |
| 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.
An AI personal mentor for goals, clarity, habits and personal growth
Honest, challenging feedback on personal and professional challenges, available at any hour through chat.
Guidance grounded in established psychological frameworks for mindset, well-being, relationships and confidence.
Personal quests guide you toward new habits and deeper self-awareness with structured follow-through.
Insights on your personality and abilities reveal blind spots and highlight the biggest opportunities for growth.
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.
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
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.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Offers guided AI journaling and emotional check-ins, ideal for users seeking structured personal reflection and growth.
Offers guided AI journaling and emotional check-ins, ideal for users seeking structured personal reflection and growth.
SpecialistBroad lifestyle agent with deep memory for routines and habits, though less centered purely on guided coaching.
SpecialistBroad lifestyle agent with deep memory for routines and habits, though less centered purely on guided coaching.
Provides private AI journaling and reflective personal growth coaching, matching Purpose's focus on mindfulness and self-improvement.
Provides private AI journaling and reflective personal growth coaching, matching Purpose's focus on mindfulness and self-improvement.
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
SpecialistFunctions as a private AI thinking partner that reflects on your ideas, though less focused on structured habit trackers.
SpecialistFunctions as a private AI thinking partner that reflects on your ideas, though less focused on structured habit trackers.
