Surge

A data-labeling service that helps companies prepare high-quality training data for machine learning models, tackling the essential but unglamorous bottleneck in every AI pipeline. Surge built a marketplace connecting businesses that need data annotation with skilled human labelers, scaling the operation without outside funding. Fully bootstrapped, the company quietly grew into a powerhouse behind major AI initiatives, reportedly generating around $1 billion a year in revenue by solving a problem every AI company faces but few want to handle in-house.