
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Grably records 1,923 monthly visits with -13% month-over-month growth and Contact for Pricing pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.

Multi-modal human interaction datasets for AI model training
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | grably.us | prolific.com |
| Pricing Model | Contact for Pricing | Paid |
| Monthly Visits | 1.92K (1,923) | 18.7M (18,697,671) |
| MoM Traffic Delta | -288 (-13%) |
| -352.04K (-1.8%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (48.8%) |
|---|
| Direct Visits / mo | 683 | 12.98M |
|---|
| User Rating | 3.8 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

Multi-modal human interaction datasets for AI model training
Datasets covering image, video, audio, code, text, and conversational interaction for varied model-training needs.
Buyer-scoped datasets with configurable anonymization, filtering, modalities, and delivery formats.
Conversational and text data spanning 100+ languages, including low-resource and underrepresented regions.
Signals that are aligned, annotated, and validated for cross-modality and scientific consistency.
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.

Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.

Crowdsourcing data services for AI training and market data


SpecialistThe environments frontier AI trains on, and the agents that do the recurring work
#3
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

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.


Expert human data and evaluation for training frontier AI

Free / Open-sourceWhere creators get paid and AI teams get premium training data

Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.


SpecialistAI-led customer interviews and research insights at scale
Free / Open-sourceThe bug bounty platform built for AI and ML security
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
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.
SpecialistSources verified B2B professionals and healthcare experts for specialized research, but lacks broad general-population academic panels.
Free / Open-sourceWhere creators get paid and AI teams get premium training data
Free / Open-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
SpecialistAI-led customer interviews and research insights at scale
Free / Open-sourceThe bug bounty platform built for AI and ML security