Snorkel AI Raises $350M Series E at $3.5B Valuation

Snorkel AI, based in the United States, is a startup that provides software and services to help corporations and AI labs build training datasets and simulated environments. The company has successfully closed a $350 million Series E funding round, which places its valuation at $3.5 billion.

Investors

The funding round was led by Insight Partners and S32. Additional investors participating in the round included Addition, Lightspeed, Greylock, GV, and Wells Fargo.

Snorkel AI Use of Funds

Snorkel AI plans to use the fresh capital to support its ongoing growth as it scales its data-as-a-service offerings to meet the increasing demand for high-quality AI training data.

About Snorkel AI

Founded in 2019, Snorkel AI was established by CEO Alex Ratner and his research team following years of work at a Stanford University AI lab. The company provides a data-centric AI platform that helps organizations programmatically label, build, and manage data for machine learning models, recently expanding into providing complete synthetic and expert-curated datasets.

Funding Details

Company Website: https://snorkel.ai

Company: Snorkel AI
Raised: $350M
Round: Series E
Funding Date: September 22, 2026
Lead Investor: Insight Partners, S32
Additional Investors: Addition, Lightspeed, Greylock, GV, Wells Fargo
Company Website: https://snorkel.ai
Software Category: Artificial Intelligence
Source: https://techcrunch.com/2026/09/22/snorkel-ai-triples-valuation-to-3-5b-as-demand-for-ai-training-data-booms/