GoKawiilSnorkel AI raises $350M Series E at $3.5B valuation, led by Insight Partners and S32
Snorkel AI, a company that builds AI training data sets and simulated environments, closed a $350 million Series E at a $3.5 billion valuation, nearly triple its $1.3 billion valuation from 17 months earlier. The round included existing backers Addition, Lightspeed, Greylock, GV, and Wells Fargo, alongside new leads Insight Partners and S32. Snorkel reports an annualized revenue run-rate of $375 million, up 18-fold over the past year.
GoKawiil's interpretation of the reporting above, not reported fact.
The jump suggests investor confidence that demand for curated AI training data and reinforcement learning environments will keep growing as labs push to train more capable models. Snorkel's shift from labeling software to full data-as-a-service, and its accounting treatment that keeps expert payouts out of headline revenue, distinguishes it from rivals like Mercor and Handshake whose gross figures include large payouts to workers. This could make direct revenue comparisons across the sector misleading, according to details the company itself disclosed.
- Snorkel AI's valuation nearly tripled to $3.5B in 17 months via a $350M Series E.
- Annualized revenue run-rate reached $375M, an 18x year-over-year increase.
- Unlike rivals, Snorkel books expert payments as cost of goods sold rather than in headline revenue.
Source: techcrunch.com — Marina Temkin, 2026-09-22
Published there as: “Snorkel AI triples valuation to $3.5B as demand for AI training data booms”
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