Nous Research, the artificial intelligence startup behind the widely popular open-source Hermes Agent, has officially closed a $90 million Series B funding round, lifting the three-year-old company’s valuation to $1.5 billion. The massive capital injection confirms earlier industry reports regarding the startup’s fundraising talks and marks a significant milestone for a company that has quickly transitioned from an open-source darling into a serious commercial player in the generative AI landscape.

The financing round was led by Robot Ventures, with substantial backing from an array of prominent investors including chipmaking giant Nvidia, Union Square Ventures, Menlo Ventures, Samsung, and 1789 Capital, a venture firm that counts Donald Trump Jr. among its partners. With this new influx of capital, Nous Research has now raised a total of $158 million since its inception three years ago, providing the startup with the financial runway necessary to aggressively scale its infrastructure, expand its engineering talent, and accelerate its push into the lucrative enterprise software market.

Fueling the Rise of Open-Source AI

At the heart of Nous Research’s meteoric rise is the Hermes Agent, an open-source AI assistant that has captured the imagination of developers, researchers, and tech enthusiasts around the globe. According to internal metrics and estimates provided by the startup, the software has been cloned more than 24 million times across various repositories and platforms. More impressively, the widespread adoption of Hermes-based models and agents is estimated to drive roughly 2.5% of all global AI token usage, placing the startup’s technology at the center of a massive slice of everyday artificial intelligence interactions.

The open-source philosophy has long been a double-edged sword in the tech industry, often praised for fostering rapid innovation and community-driven improvements, but frequently criticized for lacking clear, scalable monetization models. Nous Research, however, has managed to buck this trend. By offering powerful, transparent, and highly customizable models that developers can modify and run on their own terms, the startup has cultivated an intensely loyal user base. This grassroots popularity has not only driven immense global utilization figures but has also laid a rock-solid foundation for the company’s commercial ambitions.

Expanding into the Enterprise Sector

Armed with its newly acquired $90 million, Nous Research is preparing to execute a strategic pivot toward the corporate world. The primary vehicle for this expansion is an upcoming commercial offering tentatively referred to as "Hermes for Businesses." This enterprise-focused initiative is designed to help companies deploy customized, highly secure AI agents capable of autonomously executing complex, multi-step workflows.

In the modern corporate environment, data privacy and security remain paramount concerns. Many enterprises have hesitated to adopt off-the-shelf, closed-source large language models due to fears that proprietary corporate data might be exposed or used to train third-party systems. Nous Research aims to solve this dilemma by leveraging its open-source roots to offer enterprise clients granular control over their deployments. "Hermes for Businesses" will allow corporations to integrate intelligent automation into their internal operations—handling everything from customer support routing to intricate data analysis and software development tasks—while ensuring that sensitive operational data remains strictly private and protected within the organization’s own secure perimeter.

The enterprise AI market has become fiercely competitive, with tech goliaths like Microsoft, Google, and Amazon, alongside a host of well-funded startups, all vying for corporate IT budgets. However, industry analysts note that Nous Research’s strong developer community and the proven flexibility of the Hermes architecture give the startup a unique differentiator. Enterprises are increasingly looking for alternatives to monolithic, black-box AI systems, making transparent and adaptable agents an attractive proposition for CTOs and chief information security officers looking to future-proof their operations.

Remarkable Revenue Growth

The timing of the Series B round coincides with explosive financial growth for the young startup. Financial disclosures and reporting from outlets such as The Wall Street Journal indicate that Nous Research achieved an annualized revenue run rate of approximately $36 million by mid-September 2026. Momentum has continued to build at a staggering pace, and company leadership anticipates surpassing the $100 million annualized revenue threshold before the end of 2026.

Reaching a nine-figure revenue run rate within just a few years of operation places Nous Research in an elite tier of artificial intelligence startups. This rapid commercial acceleration explains the intense interest from top-tier venture capital firms and strategic corporate investors alike. By successfully converting massive developer adoption into enterprise-grade commercial contracts, the startup has demonstrated that open-source AI business models can yield substantial financial returns without sacrificing the community-centric ethos that fueled their initial growth.

As Nous Research channels its new capital into scaling "Hermes for Businesses" and refining its core technology, the company finds itself at a crucial juncture. With a valuation of $1.5 billion, the startup is no longer just an experimental research lab or a community project; it is a major economic force in the generative AI ecosystem. The months ahead will test the company’s ability to balance its open-source roots with the rigorous demands of enterprise clients, all while navigating an increasingly crowded and competitive market for intelligent corporate automation.