AfterQuery
YC W25 ↗San Francisco, US · Founded 2025 · 30 employees · 4 known investors
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.
AI & Machine LearningData & InfrastructureDeep TechEnterprise SoftwareArtificial IntelligenceB2BData LabelingBig DataAIin /afterquery@AfterQueryycombinator.com ↗
Founders & leadership· Y Combinator alumni (W25)
CG
Carlos Georgescuin𝕏Co-Founder
SM
Spencer Mateegain𝕏Co-Founder
Investors · 4
In the news
- AI training data startup AfterQuery nabs $30M investment - SiliconANGLEsiliconangle.com · 2026
- AfterQuery Raises $30 Million Series A Round at $300 Million Valuationbusinesswire.com · 2026
- AfterQuery raises $30M at $300M valuation from Altos Ventures as AI labs race for expert training data — TFNtechfundingnews.com · 2026
- AfterQuery Raises $30M in Series A Fundingfinsmes.com · 2026
- This 23 Year-Old’s New AI Data Company Has Already Hit A $100 Million Run Rateforbes.com · 2026
- AfterQuery - High-quality AI starts with high-quality human dataycombinator.com · 2025
- AfterQuery - AI Startup Profile | AI Market Watchai-market-watch.com