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Appen

Human data for frontier AI

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Data AnnotationTraining Data
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Appen is a data company that supplies human-validated training data for frontier AI models. With over 30 years of experience, Appen offers six specialized data product capabilities: Frontier Alignment (RLHF, reasoning, safety), Agentic AI (agent trajectories, RL environments), Speech & Audio (expressive TTS, emotion detection, dialectal speech for 500+ locales), Multimodal AI (VLM data, video annotation, cross-modal alignment), Physical AI (LiDAR annotation, robotics trajectories, sensor fusion), and Model Integrity (hallucination benchmarking, bias detection, compliance audits). Appen has 1M+ vetted contributors, SOC 2 & ISO 27001 certification, and supports 500+ global locales. The company's platform (ADAP) combines automation with human oversight to deliver expert-validated data at scale.

Key Benefits

  • 30 years of experience in AI data
  • 1M+ vetted contributors
  • SOC 2 & ISO 27001 certified
  • 500+ global locales covered
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