Patronus AI

Patronus AI is an AI evaluation and security platform that helps enterprises deploy large language models safely and reliably. The company's research-backed product enables AI engineers to automatically detect LLM failures, hallucinations, PII leakage, and content toxicity across 50+ evaluation modes, and to optimize agent performance at scale. Patronus offers evaluator models including Lynx (state-of-the-art open-source hallucination detection), a self-serve API for guardrails, and multimodal LLM-as-a-judge capabilities. Founded in 2023 by Anand Kannappan and Rebecca Qian, the company has raised $53M total and serves enterprise customers including Volkswagen's CARIAD software division.