Patronus AI
Series B
Patronus AI builds digital world models for training and evaluating AI agents.
Founded
2023Patronus AI builds digital world models for training and evaluating AI agents.
Patronus AI's core platform includes Digital World Models—language diffusion models that predict realistic environment behaviors and steer agent actions across digital workflows. The platform enables frontier AI labs and enterprises to create high-fidelity simulated environments where agents can practice, fail, and learn from long-horizon tasks spanning software engineering, finance, customer service, and research.
The company also offers specialized evaluation tools such as Lynx for hallucination detection, FinanceBench for financial reasoning, and GLIDER for explainable evaluation. Its technology is used by leading enterprises and frontier AI labs to improve model reliability and safety.
Patronus AI operates primarily as a B2B platform serving frontier AI labs and enterprises. Its customers include virtually every major AI lab, indicating a strong market position in the agent evaluation and simulation infrastructure space.
The company has demonstrated significant commercial traction, with revenue growing 15-fold over the past year. Its go-to-market strategy focuses on the enterprise segment, with plans to accelerate GTM following its Series B funding.
Patronus AI differentiates through proprietary digital world models that use reinforcement learning to catch shortcuts and hacks that traditional benchmarks miss. Its simulated environments replicate real websites and internal systems, enabling stress-testing across complex multi-step scenarios. The platform is used by virtually every frontier AI lab and many emerging startups, with revenue growing 15-fold in the past year.
Unlike human-data firms such as Mercor and Surge, Patronus evaluates agent behavior without human involvement, offering automated, scalable infrastructure. The company addresses a critical gap as AI agents move beyond chat to autonomous execution, providing the simulation infrastructure necessary for continual learning.