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Snorkel AI raises $350M, Micro1 raises $100M+ in this week's AI infrastructure funding
2026-09-25
Per Crunchbase News' weekly funding roundup (week of Sept 19-25), Snorkel AI — which provides tools for frontier labs and AI teams to develop specialized training data and environments — raised $350 million in Series E funding led by Insight Partners and S32 at a $3.2 billion valuation, with more than $375 million in annual recurring revenue. Separately, Micro1, a provider of AI training data to major AI labs, reportedly raised more than $100 million at a $4 billion valuation, per a Forbes report cited by Crunchbase.
Significance 2: Routine but notable funding rounds in the AI training-data/eval-infrastructure layer that feeds frontier labs; below the threshold of a strategic pivot or axis-moving development.
financial Funding / business
Sources
- press The Week's 10 Biggest Funding Rounds: Cybersecurity, AI And Health Take The Lead retrieved 2026-09-26