Appen records 665,840 monthly visits with +0.2% month-over-month growth and Contact for Pricing pricing. Outerbase records 9,191 monthly visits with +13% growth and Contact for Pricing pricing.
Human-validated training data and evaluation services for frontier AI models
The AI-powered interface for every database you run
| Dimension / Metric | | |
|---|---|---|
| Official Domain | appen.com | outerbase.com |
| Pricing Model | Contact for Pricing | Contact for Pricing |
| Monthly Visits | 665.84K (665,840) | 9.19K (9,191) |
| MoM Traffic Delta | +1.1K (+0.2%) | +1.06K (+13%) |
| Primary Market & Share | 🇺🇸 United States (22%) | 🇺🇸 United States (35.1%) |
| Direct Visits / mo | 238.31K | 3.64K |
| User Rating | 4.4 | 4.3 |
| 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.
The AI-powered interface for every database you run
Type a question in plain English and get an instant answer drawn from your connected data, without writing SQL by hand.
The AI editor reviews your SQL, corrects mistakes and suggests improvements, then turns result sets into presentation-ready charts automatically.
A snappy grid built from scratch for fast navigation of large tables, with customizable table plugins and edit-in-place controls.
Compose analytics boards manually or hand them to the AI, then embed charts anywhere using open-source web components.
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.
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.
Free / Open-sourceAn agentic analytics platform that turns questions into governed, trusted answers
Free / Open-sourceAn agentic analytics platform that turns questions into governed, trusted answers
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.
Free / Open-sourceChat with your data to get analysis, charts, reports, and slides
Free / Open-sourceChat with your data to get analysis, charts, reports, and slides
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
SpecialistThe multimodal data layer for computer vision and physical AI teams
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.
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.
Free / Open-sourceThe AI spreadsheet that connects to your data and explains its answers
Free / Open-sourceThe AI spreadsheet that connects to your data and explains its answers
