Free / Open-sourceRun and build with open AI models locally or in the cloud
#1BasicAI Cloud records 21,670 monthly visits with -13.1% month-over-month growth and Freemium, Enterprise Quote pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.

AI data annotation platform and managed labeling services for AI training data
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | basic.ai | prolific.com |
| Pricing Model | Freemium, Enterprise Quote | Paid |
| Monthly Visits | 21.67K (21,670) | 18.7M (18,697,671) |
| MoM Traffic Delta |
| -3.27K (-13.1%) |
| -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (21.7%) | 🇺🇸 United States (48.8%) |
|---|
| Direct Visits / mo | 8.71K | 12.98M |
|---|
| User Rating | 4.2 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

AI data annotation platform and managed labeling services for AI training data
Bounding boxes, polygons, keypoints, semantic segmentation, 3D point cloud cuboids, text/NLP tagging and RLHF dataset creation in one platform.
Automated labeling assistance across images, point clouds and audio reduces manual effort while maintaining accuracy standards.
Project management adapts to your team structure with customizable workflows, progress tracking and detailed performance reporting.
Real-time feedback plus customizable batch QA rules catch issues early and enable targeted human review.
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.
Free / Open-sourceRun and build with open AI models locally or in the cloud
#1
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Free / Open-sourceOpen-source model and dataset hub with one-click online demos


Free / Open-sourceSelf-hosted AI workspace for local and cloud models

Free / Open-sourceReal-time vision AI models and a full platform to train, annotate, and deploy them


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

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.

The multimodal data layer for computer vision and physical AI teams
SpecialistEnterprise AI training data, annotation and evaluation services
Free / Open-sourceRun and build with open AI models locally or in the cloud
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Free / Open-sourceOpen-source model and dataset hub with one-click online demos
Free / Open-sourceSelf-hosted AI workspace for local and cloud models
Free / Open-sourceReal-time vision AI models and a full platform to train, annotate, and deploy them
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.
SpecialistEnterprise AI training data, annotation and evaluation services