Appen

Appen provides human-labeled data to train AI models. The company delivers expert-validated datasets across six specializations: frontier alignment (reasoning traces, RLHF, red teaming), agentic AI (agent trajectories, RL environments), speech and audio (TTS, emotion detection, dialectal speech across 500+ locales), multimodal AI (VLM data, video annotation), physical AI (LiDAR annotation, robotics trajectories), and model integrity (hallucination benchmarking, bias audits). Appen also offers an AI Data Platform (ADAP) combining automation with human oversight.