Snorkel AI raises $350M at $3.5B valuation, passes $375M ARR
SethGRosenberg · x · 2026-09-23
Snorkel AI announced a $350M raise at a $3.5B valuation, with annual revenue run rate crossing $375M. Founded in 2019 by Stanford's Alex Ratner and team, and backed by Greylock since Seed and Series A, the company treats data as a product and technology problem—combining expert knowledge with deep tech to produce high-quality training data powering agentic and RSI workflows, with strong unit economics.
Related event: Snorkel AI Raises $350M Series E at $3.5B Valuation(15 posts)→
More from Venture
- OpenAI CFO Sarah Friar says OpenAI has 100 million subscribers — morqon · 2026-11-12
- Polymarket odds put Chinese AI lab at #1 by year-end at just 6% — Polymarket · 2026-11-12
- Rox raises $270M Series B at $1.3B valuation, 12 months after launch — Konstantine · 2026-11-12
- TSMC to invest $1B in OpenAI and Anthropic, fueling circular financing concerns — Ars Technica AI · 2026-11-12
- Memory stocks rebound as CoreWeave forecast signals demand: SanDisk +16.75% — fallingdowndizzyvr · 2026-11-12
- Anthropic IPO bull vs bear: Opus 5.5 cash cow against 40x cheaper open models — bindureddy · 2026-11-12