Prolific records 18,697,671 monthly visits with -1.8% month-over-month growth and Paid pricing. XenonStack records 52,808 monthly visits with +1.3% growth and Contact for Pricing pricing.
High-quality human data for AI training, evaluation, and research
Decision infrastructure for governed enterprise AI agents
| Dimension / Metric | | |
|---|---|---|
| Official Domain | prolific.com | xenonstack.com |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 18.7M (18,697,671) | 52.81K (52,808) |
| MoM Traffic Delta | -352.04K (-1.8%) | +679 (+1.3%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇮🇳 India (33.1%) |
| Direct Visits / mo | 12.98M | 14.04K |
| User Rating | 4.6 | 4.2 |
| 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.
Decision infrastructure for governed enterprise AI agents
A unified reasoning foundation that orchestrates analytics, infrastructure and trust across an organization's intelligent ecosystems.
An enterprise agentic OS that orchestrates AI agents across systems with governed execution, policy controls and auditable decisions.
Pre-built agents for operations, finance, risk and compliance, analytics, supply chain and security, with connectors for Snowflake, Databricks, ServiceNow, SAP and Oracle.
Continuous assurance with AI-BOMs, risk scoring and agentic security to keep AI systems compliant and defensible.
Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
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.
SpecialistEnterprise AI infrastructure where software and expert humans work together
SpecialistEnterprise AI infrastructure where software and expert humans work together
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
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.
Free / Open-sourceA secure environment where teams build, deploy and govern AI agents, apps and automations
Free / Open-sourceA secure environment where teams build, deploy and govern AI agents, apps and automations
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.
SpecialistEnterprise agentic AI platform for service, workforce and process automation
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.
Intelligent process orchestration and AI governance for complex enterprise operations
Intelligent process orchestration and AI governance for complex enterprise operations
