AfterQuery reportedly becomes Y Combinator's fastest-ever unicorn, valued at $3.2B
AfterQuery reportedly raises $3.2B valuation round, becoming Y Combinator's fastest unicorn.
Y Combinator partner Gustaf Alströmer said this is the fastest that any startup has gone from launch to unicorn status in the accelerator's history. AfterQuery's founders, now 22 and 23 years old, attended Y Combinator's Winter 2025 cohort just 18 months ago.
In April, the startup said it had reached an annualized revenue run rate of $100 million and that it was working with many of the biggest labs. It has named Nvidia, Legora, and the Korean AI lab Motif Technologies as customers.
AfterQuery belongs to a new crop of startups, following Mercor and Scale, that employ knowledge professionals such as doctors, lawyers, and other specialists for model training. However, instead of ensuring models answer questions accurately, AfterQuery trains models and agents on how to work like professionals to complete tasks — what the company describes as 'encoding the patterns, decisions, and reasoning of the world’s best practitioners.'
Forbes first reported on the round. AfterQuery could not be immediately reached for comment.