Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Supavoice records 18,928,488 monthly visits with +5.9% growth and Paid pricing.
High-quality human data for AI training, evaluation, and research
Speak and get perfectly formatted text in any Mac app
| Dimension / Metric | ||
|---|---|---|
| Official Domain | prolific.com | gumroad.com |
| Pricing Model | Paid | Paid |
| Monthly Visits | 18.7M (18,697,671) | 18.93M (18,928,488) |
| MoM Traffic Delta | -352.04K (-1.8%) | +1.06M (+5.9%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (30.9%) |
| Direct Visits / mo | 12.98M | 8.17M |
| 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.
Speak and get perfectly formatted text in any Mac app
Trigger transcription from anywhere on your Mac with Command+Option+V and paste the result into whatever app has focus.
Simple, Email, Note, Message, and custom modes shape the output into punctuation-correct prose, structured emails, bullets, or casual chat text.
Add industry jargon, acronyms, and names so specialist terms are spelled and capitalized the way you expect.
Buy once and bring your own OpenAI key instead of paying a recurring subscription fee.
Free / Open-sourceUnlimited AI transcription of audio and video in 98+ languages
Free / Open-sourceUnlimited AI transcription of audio and video in 98+ languages
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.
Free / Open-sourceTurn any video or audio into text in seconds
Free / Open-sourceTurn any video or audio into text in seconds
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.
Free / Open-sourceFree open-source dictation that runs speech-to-text on your own machine
Free / Open-sourceFree open-source dictation that runs speech-to-text on your own machine
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-sourceJust speak. Write faster, in any app.
Free / Open-sourceVoice dictation that writes like you talk, in any app
Free / Open-sourceVoice dictation that writes like you talk, in any app
Free / Open-sourceVoice typing that works in every app and website
Free / Open-sourceVoice typing that works in every app and website
