Scale AI

Scale AI is a data-labeling and annotation platform founded in 2016 that provides training data for machine learning models. The company operates a global workforce of contractors who label images, text, audio, and video for AI training purposes. Scale AI serves major technology companies and has positioned itself as a critical infrastructure provider in the AI supply chain, enabling the creation of high-quality datasets for large language models and computer vision systems.

The company raised significant venture funding and achieved unicorn status. In 2025, Meta announced a major investment, acquiring a substantial stake in Scale AI as part of its strategy to secure reliable data-labeling capacity for its AI initiatives. Scale AI's model combines software tooling with managed workforce services, differentiating it from pure crowdsourcing platforms.