Promptfoo
United States, San Francisco, CA
About Promptfoo
Promptfoo is an open-source AI security testing platform founded in 2024 that provides a comprehensive framework for AI red teaming and security testing. It helps enterprises identify and remediate vulnerabilities in AI systems before deployment, securing large language models and generative AI applications against risks like prompt injection, data leakage, and insecure tool use. Its tools are widely adopted by over 125,000 developers and more than 30 Fortune 500 companies across retail, telecom
Latest Funding
Series AAnnounced 2025-07-29
Buying Signals
Where the capital is going, and whether it's already started moving.
Spend Intent
2 signals · where the capital is going
Driving next phase of growth to scale AI security testing platform across enterprise deployments
insightpartners.com
+1 more capital deployment signal · confidence ratings · source articles
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Investors
Insight Partners
Lead investor · Series A
Tech Stack
Cloudflare
HTTP/3
Docusaurus
Key Highlights
AI InsightsThe platform addresses security challenges in AI architectures such as autonomous agents, Retrieval-Augmented Generation (RAG), and Model Context Protocol (MCP), which increase AI attack surfaces.
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