Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Scanflow records 2,450 monthly visits with -17.5% growth and Contact for pricing pricing.
High-quality human data for AI training, evaluation, and research
AI visual inspection and enterprise-grade scanning for industry
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | scanflow.ai |
| Pricing Model | Paid | Contact for pricing |
| Monthly Visits | 18.7M (18,697,671) | 2.45K (2,450) |
| MoM Traffic Delta | -352.04K (-1.8%) | -519 (-17.5%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇮🇳 India (58.6%) |
| Direct Visits / mo | 12.98M | 954 |
| User Rating | 4.6 | 4.1 |
| 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.
AI visual inspection and enterprise-grade scanning for industry
Computer-vision models run on production lines to detect defects, verify labels, count objects and check PPE for workplace safety, in real time rather than in spot audits.
Integrate high-performance barcode, QR and serial code reading into any smart device so staff can capture enterprise-grade data without dedicated hardware.
Read VIN numbers, tire sidewall DOT/TIN codes, component numbers and handwritten codes directly from a phone or smart device.
Capture customer identity documents such as passports, ID cards and driver's licences to speed up KYC, patient registration and check-in workflows.
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
Free / Open-sourceTurn paper business cards into digital contacts in seconds
Free / Open-sourceTurn paper business cards into digital contacts in seconds
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-sourceAI agents that run document-heavy business processes end to end
Free / Open-sourceAI agents that run document-heavy business processes end to end
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.
Free / Open-sourceDescribe any image with AI — detailed descriptions, captions, prompts, and text extraction in one place
Free / Open-sourceDescribe any image with AI — detailed descriptions, captions, prompts, and text extraction in one place
Free / Open-sourceScan sports cards and TCGs to get instant values and manage your collection
Free / Open-sourceScan sports cards and TCGs to get instant values and manage your collection
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
