Promptfoo is joining OpenAI

Promptfoo, an open-source platform specializing in AI security and evaluation, has announced its acquisition by OpenAI, with the aim of enhancing AI application testing and deployment. Founded in 2024 to address adversarial testing challenges, Promptfoo has rapidly grown to serve over 350,000 developers, including active participation from 130,000 monthly users and teams from more than 25% of Fortune 500 companies. The acquisition will enable Promptfoo to integrate its technology with OpenAI's model and infrastructure layers, enhancing its tools for early vulnerability detection and secure AI deployment. The open-source suite, including red teaming and static scanning tools, will continue to be maintained, supporting a wide range of AI models and providers. Promptfoo's team, led by co-founders Ian Webster and Michael D'Angelo, remains committed to maintaining service continuity and leveraging additional resources and research from OpenAI. The acquisition underscores the growing importance of AI security and evaluation as foundational elements in deploying complex AI systems. Insight Partners and Andreessen Horowitz, early investors in Promptfoo, express enthusiasm for the platform's continued impact in the AI security landscape.

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