
Large consumer panel for market research surveys, but lacks Prolific's specialized focus on academic studies and AI tuning.
Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. Quensus records 548 monthly visits with -74.3% growth and Freemium pricing.

AI-powered water leak detection and smart water management for buildings
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prolific.com | quensus.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 18.7M (18,697,671) | 548 (548) |
| MoM Traffic Delta | -352.04K (-1.8%) |
| -1.58K (-74.3%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇺🇸 United States (66.8%) |
|---|
| Direct Visits / mo | 12.98M | 212 |
|---|
| User Rating | 4.6 | 4.3 |
|---|
| 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.

AI-powered water leak detection and smart water management for buildings
Real-time water insights with remote notifications and detailed consumption data, delivering leak prevention and control from wherever you are.
WRAS-approved control valves work with the monitoring platform to cut the water supply when a leak or abnormal flow pattern is detected.
A range of flow sensors and sub-meters for accurate, reliable measurement across different pipe sizes and fluid applications.
Cable that senses the presence of water along its length and can trigger automatic shut-off when paired with the control system.

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
#2
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.


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

Free Airbnb analytics, STR revenue estimates and AI dynamic pricing

AI agents that detect, monitor and inspect anything you can see from the sky

AI-powered cloud DLP and security awareness training for SaaS environments

SpecialistAI-led customer interviews and research insights at scale

SpecialistData observability that catches silent data quality issues before they spread

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-sourceOpen-source data labeling and evaluation platform for AI workflows, but requires bringing your own annotation workforce.
Free Airbnb analytics, STR revenue estimates and AI dynamic pricing
AI agents that detect, monitor and inspect anything you can see from the sky
AI-powered cloud DLP and security awareness training for SaaS environments
SpecialistAI-led customer interviews and research insights at scale
SpecialistData observability that catches silent data quality issues before they spread