About
AfterQuery
AfterQuery is an applied research lab curating data solutions to accelerate foundation model development.
We work with domain experts to create training data, evaluation datasets, and reinforcement-learning environments that capture how professionals reason, decide, and use software.
Company facts
- Founded
- 2025
- Based in
- San Francisco, California
- Accelerator
- Y Combinator, Winter 2025
- Funding
- $30 million Series A at a $300 million valuation
- Expert network
- Nearly 100,000 verified practicing professionals
Funding and network figures are described in AfterQuery's official April 2026 announcement.
Founders
Spencer Mateega
Co-founder and CEO
Carlos Georgescu
Co-founder and CTO
Danny Tang
Co-founder