Connects researchers with a massive marketplace of verified human subjects for surveys, offering broader respondent scale than Branded.
#1Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. Branded records 3,704,728 monthly visits with +6.6% growth and Contact for Pricing pricing.

Human-validated training data and evaluation services for frontier AI models
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | appen.com | gobranded.com |
| Pricing Model | Contact for Pricing | Contact for Pricing |
| Monthly Visits | 665.84K (665,840) | 3.7M (3,704,728) |
| MoM Traffic Delta |
| +1.1K (+0.2%) |
| +228.97K (+6.6%) |
| Primary Market & Share | 🇺🇸 United States (22%) | 🇺🇸 United States (84%) |
|---|
| Direct Visits / mo | 238.31K | 1.8M |
|---|
| User Rating | 4.4 | 4.1 |
|---|
| Supported Platforms | Website | Website |
|---|

Human-validated training data and evaluation services for frontier AI models
Chain-of-thought reasoning traces, SME-level RLHF, supervised fine-tuning demonstrations and adversarial red teaming for the most capable models.
Golden trajectories, RL environment design, failure-mode taxonomies and software-engineering-driven deep evaluation for autonomous agents.
Multilingual ASR and conversational speech data, expressive TTS annotation, vision-language model training data, video action labelling and voice-agent evaluation.
LiDAR point-cloud labeling, multi-camera sensor fusion, robot demonstration trajectories, world-model rollouts and embodied interaction logs.

Targeted research audiences with AI-verified data quality
Recruit from 100+ consumer segments and industries, from first-time homebuyers to niche professional groups, based on detailed profiling.
Connect to custom audiences in real time through the Audience API and route qualified participants straight into your own research programming tools.
AI verification of participant responses removes poor actors and protects data integrity before insights reach decision-makers.
Support webcam studies, emotional AI research, surveys, and concept testing, with the flexibility to use your own tools or a third-party platform.
Connects researchers with a massive marketplace of verified human subjects for surveys, offering broader respondent scale than Branded.
#1
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.


Automates qualitative customer research by moderating live user interviews at scale and synthesizing insights into actionable reports.
#3
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing.
Runs AI-moderated qualitative interviews and automated research studies at scale, replacing traditional panel surveys with interactive conversations.

Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.

Captures video-based consumer surveys and interviews, using AI to automatically analyze emotional sentiment and thematic feedback.

SpecialistSources verified B2B professionals and healthcare experts for specialized respondent recruitment, though with less automated consumer panel volume.


SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistThe multimodal data layer for computer vision and physical AI teams
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.
Connects researchers with a massive marketplace of verified human subjects for surveys, offering broader respondent scale than Branded.
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Automates qualitative customer research by moderating live user interviews at scale and synthesizing insights into actionable reports.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing.
Runs AI-moderated qualitative interviews and automated research studies at scale, replacing traditional panel surveys with interactive conversations.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
Captures video-based consumer surveys and interviews, using AI to automatically analyze emotional sentiment and thematic feedback.
SpecialistSources verified B2B professionals and healthcare experts for specialized respondent recruitment, though with less automated consumer panel volume.
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistThe multimodal data layer for computer vision and physical AI teams
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.