Observed Signal · Sep 22, 2026 · Funding · Source: techcrunch · Impact: 4/5 · Sentiment: Positive
Snorkel AI raises $350M Series E, triples valuation to $3.5B
Snorkel AI, a startup providing AI training data and simulated environments, has raised a $350 million Series E round at a $3.5 billion valuation, nearly tripling its previous $1.3 billion valuation from 17 months ago. The round was led by Insight Partners and S32, with participation from existing investors Addition, Lightspeed, Greylock, GV, and Wells Fargo. Snorkel has shifted from data-labeling software to offering complete datasets and reinforcement learning environments. The company reports an annualized revenue run rate of $375 million, an eighteenfold increase over the past year, driven by high demand from AI labs. The funding will support scaling its data-as-a-service offering.
Major funding round in AI training data space, indicating strong market growth and investor confidence.
Key Takeaways & Evidence Grounding
- Snorkel AI raised $350 million in a Series E round.
- The Series E was led by Insight Partners and S32.
- Snorkel AI's valuation is now $3.5 billion, up from $1.3 billion.
- The company's annualized revenue run rate is $375 million.
- Snorkel AI provides AI training datasets and reinforcement learning environments.
Connected Companies & Entities
8 Entities mappedS32
Investor / PEFrontier-technology venture capital firm.
“The new round, which was led by Insight Partners and S32....”
Mercor
Expert intelligence platform for AI evaluation and deployment.
“Mercor’s gross annualized revenue has climbed to $2 billion....”
Insight Partners
Software-focused private equity and venture investment firm.
“The new round, which was led by Insight Partners and S32....”
Snorkel AI
Enterprise platform for AI data development and deployment.
“Snorkel AI, a startup that helps AI labs and corporations build training datasets and simulated environments, has raised a $350 million Seri...”
Wells Fargo
US banking group serving consumers, businesses and institutional clients.
“Existing investors, including Addition, Lightspeed, Greylock, GV, and Wells Fargo, also participated in the round....”
Greylock
Early-stage venture capital firm backing technology startups.
“Existing investors, including Addition, Lightspeed, Greylock, GV, and Wells Fargo, also participated in the round....”
GV (Google Ventures)
Alphabet-backed venture capital firm for technology startups.
“Existing investors, including Addition, Lightspeed, Greylock, GV, and Wells Fargo, also participated in the round....”
Lightspeed
Commerce software and payments platform for merchants.
“Existing investors, including Addition, Lightspeed, Greylock, GV, and Wells Fargo, also participated in the round....”
Ontology Mapping & Concepts
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