Nous Research Closes $90M Series B to Scale Hermes Open-Source Agent Platform Into Enterprise

Nous Research, the developer of Hermes, the most widely used open-source AI agent framework, has raised $90 million in Series B funding at a $1.5 billion valuation. Robot Ventures led the round, with participation from NVIDIA, Microsoft M12, Samsung, and Union Square Ventures, signaling deepening enterprise and strategic interest in open-source agent infrastructure.