Snorkel AI

Snorkel AI is building the data layer for specialized AI, enabling frontier labs, enterprises, and government agencies to develop high-quality AI systems at scale. Spun out of the Stanford AI Lab in 2019, Snorkel pioneered programmatic data labeling — replacing slow, expensive hand-labeling with automated labeling functions and expert-in-the-loop workflows. The Snorkel Flow platform lets AI teams build, evaluate, and deploy intelligent systems by combining programmatic automation with calibrated expert input. Customers include Google, Anthropic, AWS, and Microsoft. Snorkel AI is valued at $1.3B and raised a Series D in August 2025. After a 13% workforce reduction in September 2025, the company refocused on its core AI data and expert network business.