NopeCHA records 53,284 monthly visits with -14.8% month-over-month growth and Freemium, Paid pricing. Prolific records 18,697,671 monthly visits with -1.8% growth and Paid pricing.
AI CAPTCHA solving for browsers and automation pipelines
High-quality human data for AI training, evaluation, and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | nopecha.com | prolific.com |
| Pricing Model | Freemium, Paid | Paid |
| Monthly Visits | 53.28K (53,284) | 18.7M (18,697,671) |
| MoM Traffic Delta | -9.29K (-14.8%) | -352.04K (-1.8%) |
| Primary Market & Share | 🇺🇸 United States (18.2%) | 🇺🇸 United States (48.8%) |
| Direct Visits / mo | 26.51K | 12.98M |
| User Rating | 4.4 | 4.6 |
| Supported Platforms | Website | Website |
AI CAPTCHA solving for browsers and automation pipelines
Chrome, Firefox, and Edge add-ons solve image and audio challenges in-page, including on sites that require the official extension.
Returns verified tokens for Cloudflare Turnstile and Google reCAPTCHA v2/v3 without launching a browser.
Supports reCAPTCHA, Turnstile, FunCAPTCHA, Arkose, AWS WAF, GeeTest, Lemin, PerimeterX, and text CAPTCHAs.
Python (PyPI) and Node.js (npm) libraries plus a REST API for any other language.
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.
SpecialistAI-powered CAPTCHA solving API built for scale
SpecialistAI-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.
SpecialistOne browser agent that combines every major AI model with web automation
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.
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-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-sourceAI agents that automate browser workflows on any website
Free / Open-sourceAI agents that automate browser workflows on any website
SpecialistAI-led customer interviews and research insights at scale
SpecialistAI-led customer interviews and research insights at scale
SpecialistSolve reCAPTCHA, Cloudflare and more in under 0.7 seconds
SpecialistSolve reCAPTCHA, Cloudflare and more in under 0.7 seconds
