AfterQuery, a San Francisco, CA–based applied data solutions research lab, has raised $30 million in Series A funding at a $300 million valuation.
Investors
The round was led by Altos Ventures, with participation from The Raine Group, alongside existing investors Y Combinator and BoxGroup.
Founded in 1996, Altos Ventures is a Silicon Valley–based technology investment firm. Through patient and pragmatic investing, Altos partners with early- to growth-stage technology companies across consumer and enterprise sectors, aiming to build durable, compounding businesses over decades. As a registered investment advisor (RIA) with the SEC, Altos employs a uniquely flexible, long-term, and concentrated approach to venture capital, supporting companies throughout their lifecycle from inception to global growth and profitability.
AfterQuery Use of Funds
The company will use the funds to expand its expert network, deepen domain coverage, grow its team across key functions, and scale its enterprise solutions business.
About AfterQuery
Founded in January 2025 by Spencer Mateega and Carlos Georgescu, AfterQuery is an applied research lab investigating the boundaries of AI capabilities and curating high-quality datasets to power leading AI models. Its datasets and reinforcement learning environments help encode, evaluate, and scale expertise across dozens of professional domains. The company’s platform engages nearly 100,000 domain experts to create data solutions that bridge the gap between general intelligence and real-world expertise for top AI labs and enterprises.
Funding Details
Company: AfterQuery
Raised: $30.0M
Round: Series A
Funding Date: April 2026
Lead Investor: Altos Ventures
Additional Investors: The Raine Group, Y Combinator, BoxGroup
Company Website: https://www.afterquery.com/
Software Category: AI Data Infrastructure / Research
Source: https://www.businesswire.com/news/home/20260409469482/en/