AfterQuery reportedly becomes Y Combinator’s fastest-ever unicorn, now valued at $3.2B

AI model‑training startup AfterQuery has reportedly closed a new funding round that values the company at $3.2 billion, a dramatic increase from the $300 million valuation it secured in its Series A round in April. The latest round, led by an undisclosed investor group, followed the company’s announcement of a $30 million raise five months earlier, positioning AfterQuery as one of the fastest‑growing firms in the AI infrastructure space.

The valuation jump reflects AfterQuery’s rapid expansion of its platform, which enables developers to train large language models more efficiently. Industry observers note that the company’s growth aligns with heightened demand for AI‑model‑training tools as enterprises seek to deploy custom models. With the new capital, AfterQuery plans to scale its data‑processing capabilities and broaden its customer base, while maintaining its focus on delivering cost‑effective training solutions.