AfterQuery, Founded by Two 20-Somethings, Hits $3.2B Valuation in 18 Months, Fastest Unicorn in YC History
快鲤鱼 · wechat · 2026-09-07
AfterQuery, an AI training data company founded by two 20-something founders (23-year-old Spencer Mateega and 22-year-old Carlos Georgescu), has reached a $3.2 billion valuation just 18 months after founding — a 10x jump in 5 months and the fastest path to unicorn status in YC history, per Forbes.
Core business: Rather than building models or apps, the company captures process data from professionals doing complex work — not just right answers, but how doctors, lawyers, and financial analysts verify, judge, and course-correct. Its platform has nearly 100,000 verified experts, with engineering/finance tasks paying $75–150/hour and rare roles up to $250/hour.
Growth and customers: ARR exceeded $100M at its $30M Series A in April 2026, then reached "several hundred million dollars" three months later, reportedly while profitable. AfterQuery is the only external data company named in NVIDIA's Nemotron 3 Ultra technical report — its data lifted GDPval scores from 35.3 to 46.7. Other clients include Legora and Thinking Machines Lab.
Competitive landscape: It competes in a space with Scale AI (Meta's $14.3B investment, $29B valuation), Surge AI (seeking $15B valuation), Mercor ($10B valuation), and Handshake AI ($1B+ annualized revenue). Menlo Ventures data puts the sector at $8.5B combined revenue across 28 startups and nearly $100B total valuation.
Risks ahead: synthetic data may erode the value of human expert data, AI lab customers could build in-house expert networks, and reuse efficiency of expert data remains unproven.
Related event: Gen-Z Founders Hit $3.2B Unicorn Valuation in 18 Months(2 posts)→
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