Promptfoo

Promptfoo provides an AI security platform for evaluating and red-teaming large language model applications. It automates security testing for AI agents and RAG systems, simulating user interactions to uncover vulnerabilities like prompt injections, jailbreaks, and data leaks. The platform integrates into developer workflows, providing continuous monitoring and remediation in CI/CD.

The company was founded in 2024, recognizing that systematic testing ensures reliable, secure AI applications. Its creators saw developers needed to proactively address adversarial attacks and inherent risks in LLM deployments. This insight guided the development of a tool empowering AI developers with robust evaluation.

Promptfoo is utilized by developers and security teams within enterprises to build and maintain secure AI deployments. The company envisions AI security as an integral part of the development lifecycle, ensuring applications remain secure from design through operation. It aims to embed advanced testing and threat intelligence directly into the practices of AI teams.

High-Level Overview

Promptfoo is a San Francisco-based AI security company that builds an open-source platform for testing and securing generative AI applications against vulnerabilities like prompt injection, data leaks, and jailbreaks.[1][3][4] It serves developers, security teams, and enterprises—including over 85 Fortune 500 companies such as Shopify, Amazon, Anthropic, and Fidelity—by automating red teaming, continuous monitoring, and remediation workflows integrated into CI/CD pipelines and developer tools.[1][3][5] The platform solves the critical gap in AI security where traditional code scanners fail against conversational AI risks, enabling safe deployment of chatbots, agents, and complex systems with real-time threat intelligence from a 200,000+ developer community.[1][3] Growth has accelerated with 200,000+ users, a July 2025 $18.4M Series A led by Insight Partners (following a $5M seed), and expansions like Model Context Protocol (MCP) integration.[1][2][4]

Origin Story

Founded in 2024 by CEO Ian Webster and a team of security and engineering practitioners who scaled generative AI to hundreds of millions of users, Promptfoo emerged from the need for robust testing tools missing in early AI deployments.[1][2][5] Webster, drawing from front-line experience, identified risks in security, safety, legal compliance, and policy as AI shifted from code to conversation-based systems.[1] The idea gained traction via its open-source framework, quickly adopted by 25,000+ engineers at top firms; pivotal moments include the 2024 seed raise, rapid community growth to 150+ contributors from OpenAI, Google, and Microsoft, and the 2025 Series A to fuel enterprise scaling.[2][4][5]

Core Differentiators

• Adaptive Red Teaming and Automation: Uses AI agents to simulate real attackers via chat interfaces or APIs, iteratively refining tests to uncover deep flaws—scaling beyond manual methods with context-aware attacks covering 50+ vulnerability types.[1][3][4]
• Seamless Developer Workflow Integration: Embeds security in CI/CD (GitHub, GitLab, Jenkins), pull requests, and frameworks like MCP, providing remediation guidance, chain-level tracing, and continuous monitoring without added complexity.[1][3][4]
• Community-Driven Threat Intelligence: Leverages 200,000+ users and contributors from leading labs for real-time attack updates, plus open-source foundation trusted by Global 2000 firms—focusing on application logic, RAG, and agents rather than just models.[3][5]
• Enterprise-Grade Scale and Observability: Proven with 85+ Fortune 500 adopters; offers on-premise/cloud options, regression testing, and signed safety reports, positioning it as AI's equivalent to DevOps CI pipelines.[1][3][4]

Role in the Broader Tech Landscape

Promptfoo rides the explosive growth of generative AI and agentic systems, where enterprises demand secure, production-ready deployments amid rising vulnerabilities in LLMs, RAG pipelines, and multi-agent workflows.[1][4] Timing is ideal post-2024 AI boom, as regulations and incidents amplify needs for automated security—traditional tools falter, but Promptfoo's conversational red teaming fills the void, influencing standards like continuous AI evaluation akin to software DevOps.[1][3][4] Market tailwinds include surging Global 2000 AI adoption and open protocols like MCP from Anthropic; it shapes the ecosystem by open-sourcing tools that 200,000+ developers use, fostering innovation while enabling "intelligence-first design" in secure enterprise stacks.[1][4][5]

Quick Take & Future Outlook

Promptfoo is poised to dominate AI security as the "CI/CD for AI," with upcoming features like test-driven prompt development and enhanced agent tracing meeting demands for autonomous systems.[1][4] Trends like multi-agent proliferation, stricter compliance, and real-time observability will propel growth, potentially expanding to full-stack AI governance. Its influence may evolve from open-source pioneer to infrastructure standard, backed by elite investors like Insight Partners and a16z, solidifying trust in generative AI at scale.[1][4][5]