Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. Grably records 1,923 monthly visits with -13% growth and Contact for Pricing pricing.
Human-validated training data and evaluation services for frontier AI models
Multi-modal human interaction datasets for AI model training
| Dimension / Metric | | |
|---|---|---|
| Official Domain | appen.com | grably.us |
| Pricing Model | Contact for Pricing | Contact for Pricing |
| Monthly Visits | 665.84K (665,840) | 1.92K (1,923) |
| MoM Traffic Delta | +1.1K (+0.2%) | -288 (-13%) |
| Primary Market & Share | 🇺🇸 United States (22%) | 🌐 Global (—) |
| Direct Visits / mo | 238.31K | 683 |
| User Rating | 4.4 | 3.8 |
| 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.
Multi-modal human interaction datasets for AI model training
Datasets covering image, video, audio, code, text, and conversational interaction for varied model-training needs.
Buyer-scoped datasets with configurable anonymization, filtering, modalities, and delivery formats.
Conversational and text data spanning 100+ languages, including low-resource and underrepresented regions.
Signals that are aligned, annotated, and validated for cross-modality and scientific consistency.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
SpecialistConnects teams directly with verified human participants for preference tuning and studies, but lacks managed end-to-end labeling pipelines.
Crowdsourcing data services for AI training and market data
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Blends custom software with dedicated human expert teams to handle complex operations, but operates as a bespoke service.
Combines robust data labeling tools with automated workflows, but focuses more on software tooling than managed human workforces.
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.
Provides enterprise-grade AI training data and model evaluation at massive scale, but often with higher enterprise pricing.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
Delivers advanced multimodal data curation and annotation infrastructure, but requires your own annotation workforce for labeling tasks.
SpecialistAgent observability, evaluation, and continuous improvement for production AI
SpecialistAgent observability, evaluation, and continuous improvement for production AI
Expert human data and evaluation for training frontier AI
SpecialistThe multimodal data layer for computer vision and physical AI teams
SpecialistThe multimodal data layer for computer vision and physical AI teams
Free / Open-sourceWhere creators get paid and AI teams get premium training data
Free / Open-sourceWhere creators get paid and AI teams get premium training data
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.
Offers pre-packaged AI training datasets and custom data collection services, but with a smaller global crowd than Appen.
Free / Open-sourceProvides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
Free / Open-sourceProvides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
