Global AI training data platform with 1M+ annotators producing language data for speech, NLP, and computer vision.
Appen is one of the world's largest providers of AI training data, listed on the Australian Securities Exchange and employing a crowd-sourced workforce of over one million annotators and data contributors across 130+ countries. Founded in Sydney in 1996, Appen originally focused on speech and language data collection and has expanded into a full-stack AI training data platform covering natural language processing, computer vision, content relevance, and search quality evaluation. For the language AI industry specifically, Appen supplies large-scale multilingual text and speech datasets, translation quality annotation, and human preference data used by major AI labs to train and evaluate language models. The company counts Google, Microsoft, Amazon, and major social media platforms among its largest clients for search quality rating and content relevance evaluation. Appen's global annotator network enables rapid data collection across rare and low-resource languages at scale.