$350 million raised in Series E, led by Insight Partners and S32, driven by an on-demand data business that has grown more than eighteen times in one year.
Snorkel AI announced on September 22 a series E of $350 million, co-led by Insight Partners and S32, which values the company $3.5 billion. This is almost three times the 1.3 billion held in May 2025, in a 100 million turn. Third Point, March, Blumberg, Allegis, Standard VC and Frontline participate alongside the historical investors Addition, Lightspeed, Greylock, GV, P7, Wells Fargo, Walden Catalyst Ventures and Factory.
The recovery jump is due to a change of occupation. Snorkel sold annotation software; It now delivers finished training data sets, produced with domain experts. This on-demand data supply, launched almost a year ago, has seen its activity multiplied by more than eighteen and reached an annualized rate of $375 million in revenue during the week of the announcement.
The signal goes beyond the company: as models become commonplace and their prices fall, scarcity moves towards the material that specializes them.
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