Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Superhuman records 6,514,241 monthly visits with +7.9% growth and Paid pricing.
High-quality human data for AI training, evaluation, and research
The AI productivity suite with agents, email, and docs that work wherever you do
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | superhuman.com |
| Pricing Model | Paid | Paid |
| Monthly Visits | 18.7M (18,697,671) | 6.51M (6,514,241) |
| MoM Traffic Delta | -352.04K (-1.8%) | +477.48K (+7.9%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (56.8%) |
| Direct Visits / mo | 12.98M | 4.96M |
| User Rating | 4.6 | 4.5 |
| 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.
The AI productivity suite with agents, email, and docs that work wherever you do
Superhuman Go brings AI agents into the tools and tabs you already use, with inline suggestions and context-aware chat.
Auto drafts, split inbox, auto labels, and auto archive keep your inbox manageable with minimal manual filing.
Collaborative documents that hold text, tables, data, and workflows in one connected surface.
Describe what you need in chat or use a visual builder, then share agents with teammates or a company directory.
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.
Combines shared inboxes and team chat with AI assistance, but feels less optimized for solo speed.
Combines shared inboxes and team chat with AI assistance, but feels less optimized for solo speed.
Provides a smart inbox and AI writing tools across devices, but offers less advanced custom triage shortcuts.
Provides a smart inbox and AI writing tools across devices, but offers less advanced custom triage shortcuts.
SpecialistAI data infrastructure for building production-grade models
SpecialistAI data infrastructure for building production-grade models
Delivers cross-platform AI email management with strong privacy focus, but has a more traditional interface.
Delivers cross-platform AI email management with strong privacy focus, but has a more traditional interface.
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.
SpecialistAn AI executive assistant that works across your inbox, calendar and meetings
SpecialistAn AI executive assistant that works across your inbox, calendar and meetings
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.
Offers an AI-native email client with automated summaries and bundles, but lacks Superhuman's extreme speed focus.
Offers an AI-native email client with automated summaries and bundles, but lacks Superhuman's extreme speed focus.
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.
