AfterQuery
Expert-curated training datasets and agent evaluation environments for AI labs
AI
📍 San Francisco, CA
Founded 2024
Current Valuation
Private
as of 2026-Q2
PRIVATE
AfterQuery is a Y Combinator (W25) applied research lab that builds high-quality, expert-generated training datasets, RL environments, and evaluation tooling for frontier AI labs. With a network of nearly 100,000 domain experts — developers, attorneys, and other professionals — it competes with Mercor and Surge in the model-training data market.
Company Profile
Last Round
Series A — $30M (Apr 2026)
Fundraising Status
Series A · $30M · 3 mo ago
noneTotal raised $30M
Latest Funding Round
| Round | Amount | Date | Lead Investor | Post-Money |
|---|
| Series A | $30M | Apr 2026 | — | — |
Products
- Expert-curated training datasets
- Reinforcement-learning agent environments
- AI evaluation infrastructure
Competitors
Mercor · Surge AI · Scale AI · Handshake AI · micro1
AIData LabelingY CombinatorRL Environments
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2026-Q2. Refreshed quarterly.