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Research and engineering under one roof

Patronus AI is a behavioral research lab for AI. We study how frontier models behave and investigate where they fail. We turn what we find into the training data that moves model capabilities forward.

A Patronus AI researcher at work during a day in Lyon

Mission

Our mission is to deeply understand model failures. Not the cases where a model gets the answer wrong, but the ones where it technically finishes the task and does something no one wanted along the way. Tests rarely catch this type of failure. We build environments that surface them, then work out why they happen.

Founders

Patronus AI was founded in 2023 by Anand Kannappan and Rebecca Qian. Our researchers and engineers come from Meta Superintelligence Labs, Amazon AGI, Apple and Google.

Anand Kannappan

Anand Kannappan

Co-founder & CEO

“Reliability for AI agents will require the equivalent of ‘five nines’ for software systems. The path to getting there runs directly through simulation.”

Rebecca Qian

Rebecca Qian

Co-founder & CTO

“The next frontier of AI depends on scalable simulation and trustworthy evaluation. We’re building the infrastructure to make that possible.”

Backing

Seed

$3M · September 2023

Led by Lightspeed Venture Partners, with participation from Factorial Capital and angel investors including Amjad Masad and Gokul Rajaram.

Read the Seed announcement

Series A

$17M · May 2024

Led by Notable Capital, with participation from Lightspeed Venture Partners, Datadog, Factorial Capital and angel investors.

Read the Series A announcement

Series B

$50M · June 2026

Led by Greenfield Partners, with participation from Lightspeed Venture Partners, Notable Capital, Datadog, Samsung, Gokul Rajaram, Factorial Capital, and a cohort of AI leaders across the labs and neolabs.

Read the Series B announcement

Investors

Greenfield Partners

Lightspeed Venture Partners

Notable Capital

Datadog

Samsung

Factorial Capital

Gokul Rajaram

Amjad Masad

Explore the lab

  • Domains →

    The areas where we help push the frontier.

  • Research →

    Papers and benchmarks from the lab.

  • Blog →

    Write-ups of what we learn.

  • Data →

    License your data to Patronus AI for research and training.

Come work at the limits of model behavior

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