AfterQuery
www.afterquery.comAfterQuery is a San Francisco applied research lab that turns the reasoning of verified doctors, lawyers, engineers and financial analysts into training data, RL environments and evaluations for frontier AI labs such as NVIDIA, Thinking Machines Lab and Legora. Founded in 2025 by two 20-something Y Combinator alumni, it passed a $100M revenue run rate within 14 months and was reported by Forbes to be YC's fastest-ever unicorn at a $3.2B valuation in September 2026. Its interviews are founder-led, fast-changing and in-person, probing builder mindset, extreme ownership, comfort with ambiguity and genuine understanding of why expert data matters, so AfterQuery behavioral interview prep means knowing the research blog and the thesis, not just the tagline.
What we know about AfterQuery
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