Patronus AI

Patronus AI describes itself as a behavioral research lab for AI. It studies where models fail, then builds training data and simulated environments to correct those failures. Its environments are modeled on real working settings, and it runs reinforcement learning and post-training experiments. Work covers domains such as alignment, coding, knowledge work, science and computer use, and the company publishes research and benchmarks.

The company offers a data licensing program for organisations that want to license their data to Patronus AI for research and training.

Patronus AI was founded in 2023 by Anand Kannappan (CEO) and Rebecca Qian (CTO). It has raised a $3M seed round in September 2023 led by Lightspeed Venture Partners, a $17M Series A in May 2024 led by Notable Capital, and a $50M Series B in June 2026 led by Greenfield Partners. Its open roles include research and engineering positions in San Francisco, a range of contract domain expert roles (such as legal, healthcare, finance, mechanical engineering and coding) that are remote in the US or India, and operations and finance roles based in San Francisco.

Product: Simulated RL environments, training data and evaluation research for AI agents, plus a data licensing program.