# Appen

Human training data, annotation, and agentic RL environments.

- Website: https://www.appen.com/
- Category: RL startup, Data seller
- Type: Data & annotation provider
- Capabilities: Expert data, Human feedback, Multimodal
- Reviewed: 2026-09-09

## Overview

Appen provides data services for AI development, spanning collection, annotation, and specialist contributions. Its current offerings include supervised and preference data as well as environments and trajectories for agent training.

## Products & services

- Human data for model training and alignment.
- Multimodal collection and annotation.
- Agentic RL environments and task data.

## Sources & references

- [Appen products and research](https://www.appen.com/)