Promptfoo Funding & Investors

San Francisco, CA

Promptfoo finds & fixes LLM vulnerabilities before they are shipped to production. Its founders launched and scaled AI at Discord to 200M users using new research techniques specific to AI vulnerabilities and red-teaming. Promptfoo is open-source and is the most widely adopted tool in this space, with over 25,000 users at companies like Shopify, Amazon, and Anthropic.