Eight Sleep Secures $100M in Series D Funding to Power AI, Global Expansion, and Medical Innovation

by Manny Larcher - New York City

Eight Sleep, the “sleep fitness” startup, has raised $100 million in Series D financing, led by prominent investors including HSG, Valor Equity Partners, Founders Fund, Y Combinator, and sports figures like Ferrari F1 driver Charles Leclerc and McLaren CEO Zak Brown.

What's Driving the Momentum?

• Total funding now stands at approximately $260 million, including the $86M Series C in 2021, which valued the company at around $500M.
• The fresh capital will accelerate development of the Sleep Agent AI, a system that creates thousands of “digital twins” per user. It leverages biometric data to optimize sleep variables like temperature, altitude, and bedtime routines—all aimed at maximizing nightly recovery.
• Eight Sleep generated over $500 million in Pod sales since launching in 2019, and has grown its revenue more than tenfold—backed by insights derived from over one billion hours of sleep data.

Vision for Growth: Where This Capital Is Headed

1. Medical Applications & FDA Approval:
   The company is pursuing clinical pathways—targeting menopausal symptom relief (e.g., hot flashes), sleep apnea solutions, and other health-specific interventions—with the goal of securing FDA clearance and achieving prescribable-device status.
2. International Expansion, Particularly into China:
   Already serving more than 30 countries, including Canada, the UK, EU, Australia, Mexico, and the UAE, Eight Sleep is now setting its sights on China, tapping into its rising health-conscious middle class.
3. Brick-and-Mortar Retail & Brand Marketing:
   To offer hands-on experience with its Pod technology, the company plans to open retail showrooms. Simultaneously, it's ramping up TV advertising and influencer campaigns to push beyond its core early-adopter user base.
4. AI-Powered Personalization & Health Monitoring:
   The Sleep Agent builds on the existing Autopilot system, which continuously adapts to variables like travel, stress, and seasonal changes. New enhancements include Health Check, offering contactless cardiovascular and respiratory monitoring with medical-grade accuracy—no wearables required.

Why This Matters

• Convergence of Wellness & Medical Devices:
  Eight Sleep is transitioning from a premium consumer wellness brand to a potential medical-grade solution, setting the stage for broader insurance and clinical adoption.
• High-Performance Appeal with Mainstream Reach:
  Endorsements from elite athletes like Leclerc and tennis pro Taylor Fritz underscore its positioning at the intersection of performance optimization and everyday wellness.
• Scalable Tech Infrastructure:
  With proven sales success and deep biometric insights, the infrastructure is well-positioned to support rapid innovation—especially in AI and healthcare.

sources;

1. https://www.finsmes.com/2025/08/eight-sleep-raises-100m-in-new-funding.html
2. https://techcrunch.com/2025/08/19/eight-sleep-grabs-100m-to-bring-ai-into-your-bed/
3. https://news.crunchbase.com/venture/ai-powered-startup-eight-sleep-fitness-funding/
4. https://www.webpronews.com/eight-sleep-raises-100m-to-advance-ai-sleep-tech-and-expand-to-china/
5. https://www.wsj.com/articles/musk-and-zuckerberg-praise-this-3-000-smart-mattress-cover-will-regular-people-buy-too-587c41a5
6. https://www.indexbox.io/blog/eight-sleep-secures-100m-to-fuel-ai-driven-sleep-tech-expansion/