The New York-based startup, Eight Sleep, announced Tuesday that it raised a fresh $100 million round from investors such as HSG, Valor Equity Partners, Founders Fund, Y Combinator and athletes including Ferrari F1 driver Charles Leclerc, and Zak Brown, who is the CEO of McLaren F1.
With this round, Eight Sleep has raised roughly $260 million total, Pitchbook estimates. It previously raised an $86 million Series C in 2021 by investors who assigned it a $500 million post-money valuation.
Eight offers smart mattresses that integrate software and AI to track and enhance sleep quality. Its flagship product, Pod, offers features like measuring sleep stages, heart rate, breathing patterns, and movement. Using these insights, it automatically adjusts temperature, elevation, and firmness. It can also detect snoring and automatically elevate the base in response, according to the company.
The company has generated more than $500 million in Pod sales, expanded its revenue tenfold since launching the product in 2019, and collected insights from over one billion hours of recorded sleep data.
Eight, which employs just over 100 full-time staff, is now expanding beyond the Pod with its Sleep Agent, an AI-driven system that leverages large language models to create thousands of digital twins for each user and predict outcomes, with the goal of optimizing nightly recovery. This approach shifts sleep technology from reactive tracking to proactive, personalized intervention.
The sleep tech market features a range of competitors, from wearable devices such as Oura, Fitbit, and Apple, to medical-focused companies like ResMed, as well as smart mattress and sleep surface makers, including Sleep Number and ChiliSleep.
Eight’s core differentiator, Autopilot, “builds a personal blueprint from night one, then adapts continuously, accounting for seasonality, travel, stress, training, illness, or even a bad night before. And it works independently for each side of the bed,” Zatarain said.
The startup plans to use the new funding to accelerate its growth in the medical sector, building on the Pod’s health-monitoring capabilities. With the introduction of Health Check, the system can monitor cardiovascular and respiratory patterns with up to 99% accuracy without the need for wearable devices, according to the company.