AfterQuery

AfterQuery is an applied research lab that captures how domain experts reason through complex problems, then structures that thinking into training data for frontier AI models. The company moves beyond simple output pairs by providing chain‑of‑thought traces, rubrics for reinforcement learning, and custom agent environments, all designed to teach models the real decision‑making and tradeoffs that define professional work.

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Series B1 Sep, 2026
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Series A9 Apr, 2026
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Pre Seed12 Mar, 2025
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AfterQuery
Sep 1, 2026 Show on chart

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

In April, the San Francisco startup said it had reached an annualized revenue run rate of $100 million ...

https://techcrunch.com/2026/09/01/afterquery-reportedly-becomes-y-combinators-fastest-ever-unicorn-now-valued-at-3-2b/

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Y CombinatorY Combinator