Snorkel AI triples valuation to $3.5B as demand for AI training data booms

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2:56 PM PDT · September 22, 2026

Snorkel AI, a startup that helps AI labs and corporations physique grooming information sets and simulated environments, has raised a $350 cardinal Series E astatine a $3.5 cardinal valuation.

The caller round, which was led by Insight Partners and S32, valued the seven-year-old startup astatine astir triple the $1.3 cardinal valuation it garnered erstwhile it raised $100 cardinal successful a Series D 17 months ago. Existing investors, including Addition, Lightspeed, Greylock, GV, and Wells Fargo, also participated successful the round.

While Snorkel primitively provided bundle for data labeling automation, it shifted past twelvemonth to providing customers with completed information sets, an offering it calls data-as-a-service. Rather than operating purely arsenic a quality adept marketplace, Snorkel relies connected a hybrid approach, utilizing its bundle and models to make information synthetically alongside taxable substance experts.

Snorkel says its existent annualized gross run-rate present stands astatine $375 million, an 18-fold summation implicit the past 12 months. That maturation is fueled by AI labs’ insatiable appetite for high-end grooming data.

Other information companies positioning themselves arsenic AI information labs person seen a akin detonation successful growth. Mercor’s gross annualized gross has climbed to $2 billion, Handshake deed the $1 billion milestone earlier this year, and TechCrunch reported that Micro1 has scaled to $500 million. Since these companies wage retired astir 60% to 70% of their top-line income straight to the domain specialists doing the work, it’s important to enactment that their existent nett yearly gross is substantially little than those header gross figures.

Given that Snorkel sells reinforcement learning (RL) environments and implicit datasets alternatively than quality labor, payments to its quality experts are accounted for successful its outgo of goods sold alternatively than headline-generating annualized gross numbers, according to the company.

Snorkel launched commercially successful 2019 pursuing 4 years of probe by co-founder and CEO Alex Ratner and his squad astatine a Stanford AI lab.

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Marina Temkin is simply a task superior and startups newsman astatine TechCrunch. Prior to joining TechCrunch, she wrote astir VC for PitchBook and Venture Capital Journal. Earlier successful her career, Marina was a fiscal expert and earned a CFA charterholder designation.

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