
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. TENDERD records 713 monthly visits with -80.6% growth and Free Trial, Contact for Pricing pricing.

Real-time visibility into heavy fleets, from utilization and maintenance to fuel and emissions
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | prolific.com | tenderd.com |
| Pricing Model | Paid | Free Trial, Contact for Pricing |
| Monthly Visits | 18.7M (18,697,671) | 713 (713) |
| MoM Traffic Delta | -352.04K (-1.8%) |
| -2.97K (-80.6%) |
| Primary Market & Share | 🇺🇸 United States (48.8%) | 🇮🇳 India (90.1%) |
|---|
| Direct Visits / mo | 12.98M | 283 |
|---|
| User Rating | 4.6 | 4 |
|---|
| 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.

Real-time visibility into heavy fleets, from utilization and maintenance to fuel and emissions
Real-time GPS tracking and geofencing show where every vehicle and machine is, how long it has been idle and how it is being used across sites.
AI monitors operator behaviour, detects incidents and supports compliance reporting so risks are caught before they become accidents.
Predictive alerts and automatic scheduling cut unplanned downtime and keep service intervals tied to actual usage rather than guesswork.
Fuel consumption and carbon output are tracked continuously, turning sustainability targets into numbers operations teams can act on.

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 dash cameras and fleet safety intelligence that coach drivers in the moment


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.


SpecialistAll-source maritime intelligence powered by Maritime AI™


SpecialistAI-powered NEMT scheduling, dispatch and billing for medical transport fleets

AI workforce analytics that turn monitoring data into productivity and cost decisions.

SpecialistAI-led customer interviews and research insights at scale
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 dash cameras and fleet safety intelligence that coach drivers in the moment
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.
SpecialistAll-source maritime intelligence powered by Maritime AI™
SpecialistAI-powered NEMT scheduling, dispatch and billing for medical transport fleets
AI workforce analytics that turn monitoring data into productivity and cost decisions.
SpecialistAI-led customer interviews and research insights at scale