Snorkel AI Raises $100 Million in Series D

by Kay Aloha Villamor in June 2nd, 2025

Snorkel AI, a Redwood City, CA-based AI data development platform provider, has raised $100 million in Series D funding. 

Investors 

The round was led by Addition, with participation from Prosperity 7 Ventures, Greylock, Lightspeed, BNY, and QBE Ventures. 

Addition is a venture capital firm focused on early- and growth-stage technology companies across sectors such as fintech, enterprise software, consumer internet, and healthcare. Founded in 2020, the firm is based in New York, NY. 

Snorkel AI Use of Funds 

The company will use the funding to support expansion in engineering, research, and go-to-market efforts, as well as the continued development of its data-centric platform and new offerings, including Snorkel Evaluate and Snorkel Expert Data-as-a-Service. 

About Snorkel AI 

Founded in 2019, Snorkel AI is building AI data development platform for evaluating and tuning specialized AI at scale. Its offerings—Snorkel Evaluate and Snorkel Expert Data-as-a-Service—accelerate the evaluation and tuning of specialized AI systems with expert data. Its platform enabling organizations to create, curate, label, evaluate, and maintain domain-specific datasets essential for building production-grade machine learning (ML) and large language model (LLM) systems. Launched out of the Stanford AI Lab, Snorkel AI serves Fortune 500 companies, including BNY, Wayfair, and Chubb, as well as across the U.S. federal government, including the U.S. Air Force. 

Funding Details 

Company: Snorkel AI, Inc. 

Raised: $100.0M 

Round: Series D 

Funding Date: May 2025 

Lead Investor: Addition 

Other Investors: Prosperity 7 Ventures, Greylock, Lightspeed, BNY, QBE Ventures 

Company Website: https://snorkel.ai/  

Software Category: AI Data Development Platform / Machine Learning Infrastructure 

Source: https://www.businesswire.com/news/home/20250529083998/en/ 

 


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