AfterQuery Raises $30M at $300M Valuation

AI training data startup AfterQuery has secured $30 million in funding at a $300 million valuation, led by Altos Ventures with participation from Y Combinator, The Raine Group, and BoxGroup. The 14-month-old San Francisco company counts every leading AI lab as a customer and surpassed $100 million in annual recurring revenue before the round. AfterQuery provides AI developers with datasets featuring detailed reasoning steps behind prompt responses, plus evaluation suites, development environments, and multimodal training data. The company generates content through nearly 100,000 professionals and will use the new funds to expand its expert network, workforce, and enterprise business.