Patronus AI, a startup founded in 2023 by former Meta AI researchers Anand Kannappan and Rebecca Qian, is helping model makers and companies fine-tune models by building simulated digital environments in which to evaluate the agents’ performance.

Patronus’ revenue has grown 15-fold over the past year, fueling significant investor interest. On Thursday, the company announced a 70 million.

The company unveiled Digital World Models — large-scale simulation environments designed to help AI systems train, evaluate, and improve across complex digital workflows.