Patronus AI has announced a $50 million Series B led by Greenfield Partners and unveiled its Digital World Models, a new class of large-scale simulation environments designed to help AI systems train, evaluate, and improve across complex digital workflows.
Since its launch less than three years ago by former Meta, Amazon and Google employees, Patronus AI has become a leader in AI evaluation, simulation infrastructure, and reliability testing for frontier AI systems. Today, Patronus AI works with the majority of the world’s leading frontier AI labs and hyperscalers. The company’s revenue has grown more than 15x over the past year, reflecting growing demand for infrastructure that helps organizations train, evaluate, and deploy increasingly autonomous AI systems. The new funding brings Patronus AI’s total capital raised to $70 million.
The company builds simulation infrastructure that allows AI systems to train on realistic software, research, communication, and enterprise workflows. Instead of optimizing for narrow benchmark performance, the goal is to produce agents that can operate reliably across ambiguous, long-horizon tasks.
Leave a Reply