The seven-year-old data-labeling startup raised a $350 million Series E as demand for AI training data keeps climbing.
Snorkel AI closed a $350 million Series E that triples its valuation to $3.5 billion, fueling its data-as-a-service model. The round signals continued investor appetite for infrastructure that feeds frontier model training, even as foundation model companies themselves dominate headlines.
The raise comes amid a broader arms race in synthetic and curated training data, as labs push to differentiate models on quality rather than raw scale alone.
As frontier labs hit diminishing returns on raw compute scaling, the data supply chain becomes the next chokepoint — operators building AI products should watch data vendors as closely as model providers for pricing power shifts.
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