Outlier

Outlier is an AI training platform operated by Scale AI that connects domain experts — including MAs, PhDs, and college graduates — with leading AI companies to provide high-quality human feedback that improves large language models. Contributors complete tasks such as writing challenging prompts, creating grading rubrics, and rating AI-generated responses across fields including coding, STEM, languages, and law. The platform has paid out over $500 million to more than one million experts across 50 countries, operating with full schedule flexibility and no minimum hour requirements. Outlier serves as a key pipeline for RLHF data used by major AI labs.