San Francisco, California, United StatesFounded 202424+ employeesPrivate
$23.4M raisedSeed· last: series a (Jul 2025)· 2 rounds
Backed by(6 investors)
Promptfoo is the leading open-core platform for AI application security, enabling enterprises to identify and remediate vulnerabilities in LLMs, RAG systems, and AI agents before they reach production. Our approach is designed to incorporate AI AppSec from the start of the development lifecycle, aligning with the DevSecOps maturity models organizations follow as security programs shift from manual pen-testing to automated, continuous AI red teaming. 200,000+ developers and over 125 Fortune 500 companies use Promptfoo’s open-source framework in their development workflows. OpenAI and Anthropic also recommend Promptfoo through their online courses.
