# AfterQuery

> AfterQuery is a San Francisco applied research lab that builds expert-generated datasets, benchmarks, and reinforcement-learning environments for the world's leading AI labs. The company recruits nearly 100,000 vetted domain experts - in finance, law, medicine, software, and beyond - to teach frontier models how specialists actually think.

- **Founded:** 2025
- **Headquarters:** San Francisco, United States
- **Founders:** Spencer Mateega (Co-Founder & CEO), Carlos Georgescu (Co-Founder)
- **Team size:** ~120 employees (Apollo); ~30 listed on YC profile; expert network of ~100,000
- **Products:** Supervised Fine-Tuning Data, Reinforcement Learning + Rubrics, Agent Environments, Computer Use Trajectories, Benchmarks & Evaluations
- **Notable:** Hit $100M ARR within 14 months of founding, Raised $30M Series A at $300M valuation in April 2026, Built a vetted expert network of nearly 100,000 professionals

## Products & services

- **Supervised Fine-Tuning Data** — High-quality prompt-response pairs and reasoning traces written by vetted domain experts.
- **Reinforcement Learning + Rubrics** — Expert-designed prompts paired with grading frameworks for RLHF and verifiable-reward training.
- **Agent Environments** — Custom sandboxes across APIs and tools for training and evaluating autonomous agents.
- **Computer Use Trajectories** — Human-demonstrated software interactions for end-to-end agent navigation training.
- **Benchmarks & Evaluations** — Domain-specific evaluation sets for measuring frontier model capability in fields like finance, law, and medicine.

## Achievements

- Hit $100M ARR within 14 months of founding
- Raised $30M Series A at $300M valuation in April 2026
- Built a vetted expert network of nearly 100,000 professionals
- Backed by angels from Anthropic, OpenAI, DeepMind, Meta, and Microsoft

## Latest updates

- **2026-04** — Closed $30M Series A led by Altos Ventures at a $300M valuation.
- **2026-04** — Disclosed $100M+ annual revenue run rate, roughly 14 months after founding.
- **2025-01** — Company founded; joined Y Combinator's Winter 2025 batch.

## Links

- Website: https://afterquery.com
- LinkedIn: https://www.linkedin.com/company/afterquery
- Twitter/X: https://x.com/AfterQuery
- Instagram: https://www.instagram.com/afterquery/

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Profile page: https://yespress.io/afterquery
Published by YesPress — https://yespress.io
Last updated: 2026-05-30