Nous Research, the developer of the open-source Hermes agent, has raised a $90 million Series B round at a $1.5 billion valuation. The round was led by Robot Ventures, with participation from Nvidia, Samsung, and other backers. This new financing brings the three-year-old startup's total funding to $158 million. The company is now expanding into the enterprise sector with "Hermes for Businesses," offering customized AI agents for multi-step workflows while maintaining data privacy. The Wall Street Journal reported the company was at approximately $36 million in annualized revenue by mid-September 2026 and expects to exceed $100 million by the end of 2026.