According to a report, AI training-data startup AfterQuery has raised a funding round that values the company at $3.2 billion, a more than tenfold increase from its $300 million valuation in April, when it announced a $30 million Series A. Y Combinator partner Gustaf Alströmer stated that this represents the fastest trajectory from launch to unicorn status in the accelerator’s history. The founders, aged 22 and 23, participated in Y Combinator’s Winter 2025 cohort 18 months ago.

In April, AfterQuery disclosed an annualized revenue run rate of $100 million and cited major clients such as Nvidia, Legora, and the Korean AI lab Motif Technologies. The company is part of a emerging group of startups, following in the footsteps of Mercor and Scale, that leverage knowledge professionals like doctors and lawyers to train AI models. However, AfterQuery distinguishes itself by training models and agents to emulate the decision-making and reasoning patterns of top practitioners, aiming to “encode the patterns, decisions, and reasoning of the world’s best practitioners.” Read more

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