# Snorkel AI Startup profile on Capital Atlas: https://capitalatlas.ai/startups/snorkel-ai - Industry: Software - Headquarters: San Francisco, US - Website: www.snorkel.ai - Total disclosed funding: $585M - Latest round: Series E (Sep 22, 2026) - Investors on record: 25 ## About Based in the US, Snorkel AI, Inc. specializes in advanced AI data development services, creating expert-curated datasets to enhance AI model performance across various industries, including healthcare, finance, and technology.Founded in 2019 and headquartered in Redwood City, US, Snorkel AI, Inc. focuses on AI data development services. The company was established by Alexander Ratner, Braden Hancock, Henry Ehrenberg, and Paroma Varma. In September 2026, Snorkel AI, Inc. raised USD 350 million Series E funding co-led by Section 32 and Insight Partners, with participation from Standard Capital, Third Point, Frontline, Allegis Capital, Blumberg Capital, March Capital, One Prime Capital, D.E Shaw Ventures and Wells Fargo Bank, Addition, Greylock Partners, Lightspeed Venture Partners, GV, Factory, Blackrock, Prosperity7, Walden Catalyst. The venture funding values Snorkel AI, Inc. at USD 3.5 billion post-money. Snorkel AI specializes in advanced AI data development services, focusing on the creation of expert-curated datasets designed to enhance the performance of AI models. Their primary offerings include the Snorkel Expert Data-as-a-Service, which utilizes a team of master’s and PhD-level professionals to develop high-quality, domain-specific datasets that cater to various industries such as healthcare, finance, and technology. Snorkel’s services address critical use cases in areas like agentic systems, coding, and complex reasoning tasks, enabling clients to accelerate AI model training while achieving high levels of accuracy. The company has established a partnership model with leading AI teams, including Fortune 500 companies, providing tailored solutions that are continuously refined through structured expert reviews and automated validation processes. Snorkel AI's products are utilized globally, serving customers in North America, Europe, and Asia.The revenue model for Snorkel AI is primarily based on B2B transactions involving its Expert Data-as-a-Service and custom AI solutions. Clients engage with Snorkel through structured agreements that encompass project-based contracts or ongoing service subscriptions, ensuring a steady stream of revenue. Transactions are often initiated by companies seeking specialized datasets to enhance their AI capabilities, which may include negotiating specific project scopes, deliverables, and timelines. While individual pricing details for services are not disclosed, typical engagement packages would consist of comprehensive data solutions tailored to each client's distinct needs, facilitating the development of advanced AI models. Snorkel AI’s expertise and collaborative approach allow them to command a strong position in the market, producing significant revenue from their partnerships with industry leaders and innovative technology firms.The company will use the September 2026 funding to expand its agentic data factory and accelerate investment in vertical and enterprise AI applications. ## Funding rounds - Series E, Sep 22, 2026, $350M — Lightspeed Venture Partners, Walden Catalyst, Insight Partners, Wells Fargo Bank, Blumberg Capital, Greylock Partners, Third Point, D. E. Shaw & Co, GV, BlackRock, Frontline, March Capital, Section 32, Factory, Addition, OnePrime Capital, Prosperity7, Allegis Capital, Standard Capital - Series D, May 29, 2025, $100M — Lightspeed Venture Partners, Greylock Partners, BNY Mellon Investment Management, QBE Ventures, Addition, Prosperity7 - Series C, Aug 9, 2021, $85M — Lightspeed Venture Partners, Walden Catalyst, Greylock Partners, GV, BlackRock, GC&H Investments, Factory, Addition, Nepenthe Capital, Stonebridge Ventures - Series B, Oct 13, 2020, $35M — Lightspeed Venture Partners, Greylock Partners, GV, In-Q-Tel, BlackRock, Nepenthe Capital - Series A, Oct 1, 2019, $12M — Greylock Partners - Seed, Jun 1, 2019, $3M — Greylock Partners, GV ## Investors - Greylock Partners (https://capitalatlas.ai/funds/greylock-partners) — Seed, Series A, Series B, Series C, Series D, Series E - GV (https://capitalatlas.ai/funds/gv) — Seed, Series B, Series C, Series E - Lightspeed Venture Partners (https://capitalatlas.ai/funds/lightspeed-venture-partners) — Series B, Series C, Series D, Series E - In-Q-Tel (https://capitalatlas.ai/funds/in-q-tel) — Series B - BlackRock (https://capitalatlas.ai/funds/blackrock) — Series B, Series C, Series E - Nepenthe Capital (https://capitalatlas.ai/funds/nepenthe-capital) — Series B, Series C - Walden Catalyst (https://capitalatlas.ai/funds/walden-catalyst) — Series C, Series E - GC&H Investments (https://capitalatlas.ai/funds/gc-h-investments) — Series C - Factory (https://capitalatlas.ai/funds/factory) — Series C, Series E - Addition (https://capitalatlas.ai/funds/addition) — Series C, Series D, Series E - Stonebridge Ventures — Series C - BNY Mellon Investment Management (https://capitalatlas.ai/funds/bny-mellon-investment-management) — Series D - QBE Ventures (https://capitalatlas.ai/funds/qbe-ventures) — Series D - Prosperity7 (https://capitalatlas.ai/funds/prosperity7) — Series D, Series E - Insight Partners (https://capitalatlas.ai/funds/insight-partners) — Series E - Wells Fargo Bank — Series E - Blumberg Capital (https://capitalatlas.ai/funds/blumberg-capital) — Series E - Third Point (https://capitalatlas.ai/funds/third-point) — Series E - D. E. Shaw & Co (https://capitalatlas.ai/funds/d-e-shaw-co) — Series E - Frontline (https://capitalatlas.ai/funds/frontline) — Series E - March Capital (https://capitalatlas.ai/funds/march-capital) — Series E - Section 32 (https://capitalatlas.ai/funds/section-32) — Series E - OnePrime Capital (https://capitalatlas.ai/funds/oneprime-capital) — Series E - Allegis Capital — Series E - Standard Capital (https://capitalatlas.ai/funds/standard-capital) — Series E