AfterQuery, an applied data solutions research lab focused on advancing artificial intelligence capabilities, announced that it has raised $30 million in a Series A funding round at a $300 million valuation.
The round was led by Altos Ventures, with participation from The Raine Group alongside existing investors including Y Combinator and BoxGroup. The company also revealed that it has surpassed $100 million in annual revenue run rate, signaling strong demand from leading AI labs and enterprises.
Founded in January 2025, AfterQuery develops specialized datasets and reinforcement learning environments designed to enhance the performance of frontier AI models. The company works with subject matter experts across industries such as finance, software engineering, medicine, and law to convert human expertise into structured data and reasoning frameworks that can be used to train AI systems.
AfterQuery’s platform currently engages nearly 100,000 verified professionals to help encode domain-specific knowledge into AI models. The company also collaborates with enterprises to address complex AI implementation challenges through custom research and data solutions.
The newly raised capital will be used to expand AfterQuery’s expert network, broaden its domain coverage, and invest in hiring across operations, engineering, and research. The company also plans to continue building out its enterprise solutions business.
In just over a year since launch, AfterQuery has positioned itself as a key data partner to leading AI labs, aiming to bridge the gap between general-purpose AI and real-world professional expertise.
KEY QUOTES:
“We are excited to have the support of both new and existing investors as we make expertise that once took a lifetime to build available to anyone. For most of human history, expertise has been scarce, constrained by the time and reach of an individual. Until now. This influx of capital will allow us to further support our customers by encoding the reasoning of the world’s best professionals into models to carry that knowledge further than any individual ever could.”
Spencer Mateega, Co-Founder and CEO of AfterQuery
“We are also proud to share that AfterQuery has surpassed $100 million in annual revenue run rate, a milestone that reflects both the urgency of the problem we are solving and the trust the world’s leading AI labs have placed in us.”
Spencer Mateega, Co-Founder and CEO of AfterQuery
“Human data is an enormous market and critical bottleneck for frontier models, and for advancing the quality of AI. Spencer and Carlos have in a short time proven themselves to be world-class operators and deep technologists who are working relentlessly to help AI labs push the limits of model progress.”
Zac Mohring, Altos Ventures
“With the ongoing intensification of the AI arms race, we continue to see promising opportunities to invest at the forefront of development in the space. AfterQuery is meeting a distinct, critical need in the market, and we look forward to supporting the future growth of the company.”
Landon Baker, Raine Ventures
