AfterQuery
YC W25San Francisco, US · Founded 2025 · 30 employees · Hiring · 5 known investors
Find your way into AfterQuery
419 people in our graph share verified history with the AfterQuery team — schools, employers, funds. One of them is your warm intro.
Hemamunlockedknows Carlos Georgescu · together at Stealth Startup (overlapped)
×4knows the team · via Stealth Startup
×2knows the team · via Morgan Stanley
×2knows the team · via Citadel Securities
×3knows the team · via Silver Lake
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
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.
CG
Carlos Georgescuin𝕏Co-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.
SM
Spencer Mateegain𝕏Co-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.
Investors · 5
BoxGroupNew York · $1M
Failup VenturesHelsinki · $200K – $1M
Y CombinatorSan Francisco · $500K
Altos Venturesreported · 2 sourcesBurlingame · $1M – $3M
Also in the syndicate · 1
The Raine Group
Funding
SEC filings, press & company announcements$60M disclosed across 2 rounds · 2026
- $30MSeries AApr 2026 · 2 sourcesSource ↗
- $30MraisedApr 2026 · 2 sources
Altos Ventures (lead), BoxGroup, The Raine Group, Y Combinator
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Competitors · 4
by search overlapQuery Ai25 shared keywordsQuery.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.
Netezza19 shared keywordsIBM is a global technology company whose business spans enterprise software (including Red Hat, HashiCorp, and Confluent), IT infrastructure such as mainframes, servers, and storage, and IT consulting services. The company is also investing heavily in quantum computing and AI-based enterprise offerings, including its Lightwell open-source software security clearinghouse and the Anderon quantum wafer foundry.
Finquery17 shared keywordsFinQuery 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.
Hugging Face13 shared keywordsHugging 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 competing with AfterQuery for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
AfterQuery reportedly becomes Y Combinator’s fastest-ever unicorn, now valued at $3.2Btechcrunch.com · Sep 2026Frequently 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, Y Combinator, Altos Ventures.
- How much funding has AfterQuery raised?
- AfterQuery has disclosed $60M raised across 2 rounds.
- Where is AfterQuery headquartered?
- AfterQuery is headquartered in San Francisco, US.