CapSolver records 73,385 monthly visits with -30.9% month-over-month growth and Free Trial, Paid pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
AI CAPTCHA recognition API for reCAPTCHA, Cloudflare and more
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | dashboard.capsolver.com | prolific.com |
| Pricing Model | Free Trial, Paid | Paid |
| Monthly Visits | 73.39K (73,385) | 18.7M (18,697,671) |
| MoM Traffic Delta | -32.82K (-30.9%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (29.6%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 55.2K | 12.98M |
| User Rating | 4.2 | 4.6 |
| Supported Platforms | Website | Website |
AI CAPTCHA recognition API for reCAPTCHA, Cloudflare and more
Handles popular challenge types including reCAPTCHA, hCaptcha, Cloudflare Turnstile, and image or OCR-based recognition.
A straightforward HTTP API lets developers submit challenges and receive solution tokens programmatically.
Extensions and browser-automation hooks make it easier to solve challenges inside real browsing sessions.
Image recognition plus OCR models are applied to text and picture CAPTCHAs as well as interactive puzzles.
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.
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Free / Open-sourceBuild, train, and deploy computer vision for the physical world
Free / Open-sourceBuild, train, and deploy computer vision for the physical world
AI-powered CAPTCHA solving API built for scale
AI-powered CAPTCHA solving API built for scale
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
Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes
Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes
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.
Search foundation built from embeddings, rerankers, and reader APIs
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.
Cloud browsers for AI agents, scraping, and automation that won't get blocked
Cloud browsers for AI agents, scraping, and automation that won't get blocked
SpecialistProxies and web data APIs for scraping and AI pipelines
SpecialistProxies and web data APIs for scraping and AI pipelines
