Tether Backs Eight Sleep at $1.5B Valuation
Crypto firm Tether is diversifying its investments, with its venture arm backing sleep tech company Eight Sleep at a $1.5 billion valuation. The strategic investment signals Tether's expansion into AI, biotech, and consumer hardware, moving beyond its core crypto operations.
This latest strategic round injects $50 million into Eight Sleep, marking a significant valuation step-up for the company. The firm was valued at approximately $500 million during its Series C in August 2021, grew to $1 billion in August 2025, and has now reached $1.5 billion with Tether's investment. Investor confidence is bolstered by key performance metrics, as Eight Sleep achieved free cash flow positivity in 2025. This financial milestone is particularly notable in the capital-intensive consumer hardware sector, signaling a strong grasp on operational efficiency and a sustainable business model. The new capital will accelerate the evolution of Eight Sleep'
