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AfterQuery

Unicorn · $3.2BYC W25

San Francisco, US · Founded 2025 · 30 employees · Hiring · 9 known investors

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AfterQuery is an applied research lab that curates training data solutions for foundation model development by capturing expert reasoning and decision-making processes. The company works with domain experts to transform real-world professional work into structured datasets that teach AI models how to solve complex problems through step-by-step reasoning rather than just outputs.

Also known as Cronus Technologies, Inc. · Cronus

AI & Machine LearningData & InfrastructureDeep TechEnterprise SoftwareArtificial IntelligenceB2BData LabelingBig DataAIUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (W25)

AfterQuery was founded in 2025 by Carlos Georgescu and Spencer Mateega.

CGCarlos Georgescu
Carlos GeorgescuCo-Founder, CTOCarlos Georgescu studied computer science at the University of British Columbia and worked as a software engineer at Meta and Google; he also interned at Citadel Securities and previously founded an ed-tech company that was acquired.
SMSpencer Mateega
Spencer MateegaCo-Founder, CEOSpencer Mateega studied finance and statistics at Wharton and computer science at Penn before interning in technology private equity at Silver Lake and technology investment banking at Morgan Stanley, and working as a software engineer at Meta and Google. He is now building AfterQuery.
AZ
Alec ZhouHiring Manager
ES
Elisa ShiChief of Staff
RW
Radhik WickramasingheHiring Manager
JC
Jarod CheungHiring Manager
DT
Danny TangFounder2024–2026

Investors · 9

Failup Ventureslisted by Failup VenturesHelsinki · $200K – $1M

How we know: Y Combinator's founder network · Not right? Tell us

Rainelisted by RaineNew York

How we know: Raine's portfolio page · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · siliconangle.com · open dataset · 5k.vc investor directory · Not right? Tell us

Altos VenturesreportedBurlingame · $1M – $3M

How we know: funding news · techfundingnews.com · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: clairezau.substack.com · Y Combinator's founder network · Not right? Tell us

Latitude CapitalreportedSan Francisco

How we know: Y Combinator's founder network · open dataset · 5k.vc investor directory · Not right? Tell us

Sequoia CapitalreportedMenlo Park · $100K – $50M

How we know: clairezau.substack.com · Not right? Tell us

Also in the syndicate · 1

The Raine Group

Funding

SEC filings, press & company announcements

$60M disclosed across 2 of 3 rounds · 2026

Source: company announcements and press reports — follow each round's link for the claim.

Valuation · disclosed

Disclosed events
$3.2Bvaluation at Series BSep 2026
filing ↗

Source: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.

Related companies · 8

Query AiQuery.ai offers a federated search platform that lets security teams search and normalize data across multiple sources — including SIEMs, data lakes, cloud storage, EDR, identity, and threat intelligence tools — from a single search bar without writing complex queries. It is aimed at security professionals conducting investigations and threat hunts across disparate security data sources.
Liva AILiva AI collects specialized training data for audio and video models used by AI research labs, addressing gaps in publicly available datasets. The company serves machine learning teams developing speech and video recognition systems.
SciloopSciloop builds datasets and solutions for frontier AI models by connecting a global network of expert mathematicians, physicists, computer scientists, and domain specialists to solve complex problems that current AI cannot address.
Deasy LabsDeasy Labs automates the transformation of unstructured data into AI-ready structured data through a context engine that handles discovery, tagging, filtering, and enrichment. The platform serves engineers and data scientists building AI projects that require clean, continuously maintained data to prevent model drift in production.
RitivelRitivel builds an AI-native platform that automates regulatory workflows and documentation for life sciences companies, helping accelerate the submission of therapies to patients.
FinqueryFinQuery is an intelligent subledger platform that extracts data directly from source documents to automate technical accounting tasks including lease accounting, fixed assets, debt management, and accrual/prepaid expense accounting. It integrates with any ERP system and serves organizations managing complex accounting compliance requirements.
SureformA data collection company that gathers high-quality human data across diverse interactions and environments to support development of multimodal and embodied AI systems.
Hugging FaceHugging Face is a collaboration platform that hosts and provides access to machine learning models, datasets, and applications. It offers both open-source tools for the ML community and paid compute and enterprise solutions for teams building AI applications.

Companies working in the same space as AfterQuery.

Legal entities · 1

corporate structure
Cronus Technologies, Inc.

In the news

AfterQuery reportedly becomes Y Combinator’s fastest-ever unicorn, now valued at $3.2Btechcrunch.com · Sep 2026AfterQuery Raises $30M in Series A Fundingfinsmes.com · Apr 2026AfterQuery - High-quality AI starts with high-quality human dataycombinator.com · Feb 2025AfterQuery - AI Startup Profile | AI Market Watchai-market-watch.com

Frequently asked questions

What does AfterQuery do?
AfterQuery is an applied research lab that curates training data solutions for foundation model development by capturing expert reasoning and decision-making processes. The company works with domain experts to transform real-world professional work into structured datasets that teach AI models how to solve complex problems through step-by-step reasoning rather than just outputs.
Who founded AfterQuery?
AfterQuery was founded by Carlos Georgescu, Spencer Mateega in 2025.
Who are AfterQuery's investors?
AfterQuery's investors include BoxGroup, Failup Ventures, Raine, Y Combinator, Altos Ventures, Andreessen Horowitz, Latitude Capital, Sequoia Capital.
How much funding has AfterQuery raised?
AfterQuery has disclosed $60M raised across 2 of its 3 known rounds.
Where is AfterQuery headquartered?
AfterQuery is headquartered in San Francisco, US.