AI Data Mining

Appen

Appen provides human-validated data and evaluation services that help train, align, and assess frontier AI systems.

Appen

Expert human data for frontier AI training and evaluation

Visit website

What is Appen?

Appen is an AI data company that supplies expert-validated training, evaluation, and alignment data for modern AI systems. Its platform and services support model development across frontier, agentic, speech, multimodal, physical, and integrity-focused AI workflows.

How to use Appen?

  1. 1Review the AI capability you need, such as alignment, speech, multimodal, or evaluation data.
  2. 2Contact Appen to scope the dataset, annotation, or validation requirements.
  3. 3Define quality standards, taxonomy, and review rules for your project.
  4. 4Run the data collection, labeling, or expert validation workflow.
  5. 5Use the delivered data to train, fine-tune, benchmark, or monitor your AI system.

Appen Key Features

  • Expert-validated training data for AI models
  • RLHF, SFT, and reasoning trace support
  • Agentic AI trajectories and environment design
  • Speech, audio, and multilingual localization data
  • Multimodal and document annotation
  • Physical AI support including LiDAR and sensor fusion
  • Model evaluation, red teaming, and integrity monitoring

Appen Use Cases

  • Training frontier language models
  • Aligning assistants with human feedback
  • Evaluating autonomous agents
  • Building speech and audio AI systems
  • Creating multimodal foundation model datasets
  • Annotating robotics and physical AI data
  • Benchmarking safety, bias, and hallucinations

Appen Pricing & Free Credits

Appen currently operates on a Custom Pricing model.

Custom pricing

Contact for pricing

Pricing is tailored to project scope, data volume, expert requirements, and service mix.

Appen Pros & Cons

Pros

  • Strong focus on high-quality human-validated AI data
  • Broad coverage across frontier, speech, multimodal, and physical AI
  • Supports evaluation, safety, and alignment workflows
  • Suitable for enterprise-scale custom projects

Cons

  • Pricing is not publicly listed
  • Primarily a service and data platform rather than a self-serve AI app
  • Best suited to teams with custom data and annotation needs

What is Appen best for?

  • AI teams needing custom training data
  • Enterprises building frontier or agentic AI
  • Organizations that require human evaluation and red teaming
  • Companies working on speech, multimodal, or robotics AI

Appen FAQ

Top free alternatives to Appen

Elicit is an AI research assistant that helps researchers search papers, generate evidence-based reports, and automate literature review workflows.

Free

A Discord content discovery and search platform that helps surface community questions, answers, and discussions.

Outset is an AI-moderated research platform for running interviews, recruiting participants, and instantly synthesizing insights at scale.

MacroMicro is a macro analytics platform with global economic charts, research tools, and market-cycle insights for investors.

DroneDeploy is a reality capture platform that uses drones, robots, 360 cameras, and AI to document and understand job sites.

SuperAnnotate is an enterprise AI data platform for annotation, dataset creation, evaluation, and human-in-the-loop workflows.

PPSPY is a Shopify research and sales tracking tool that helps merchants find winning products, monitor competitors, and analyze store traffic.

ShowZone is a free MLB The Show companion site for player ratings, market tracking, team building, inventory management, and strategy guides.