Promptfoo's team will join Sam Altman-led OpenAI, and its technology will be integrated into the Frontier platform for AI ...

Founded in 2024, Promptfoo began as an open-source framework for evaluating AI prompts and model behavior. It later expanded into a commercial platform used by developers and enterprise security teams ...

The tool, which OpenAI said is used by 25 percent of Fortune 500 companies, helps “identify and remediate vulnerabilities in AI systems during development.” [Link: OpenAI to acquire Promptfoo | | Ope ...

OpenAI has confirmed its acquisition of Promptfoo, a cybersecurity startup specializing in testing and securing AI systems. The deal could strengthen protection ...

OpenAI acquires AI security startup Promptfoo to bolster its Frontier enterprise platform. Learn how automated red teaming will secure the next generation of AI agents.

Led by Insight Partners with participation from Andreessen Horowitz, funding will accelerate development of the widely adopted AI security testing solution SAN FRANCISCO, July 29, 2025 /PRNewswire/ -- ...

OpenAI has acquired AI security startup Promptfoo to strengthen testing and protection of AI systems. The startup builds tools that help developers detect risks like prompt injection attacks and data ...

Promptfoo provides tools that help companies identify vulnerabilities in AI systems during development, including issues such as prompt injections, data leaks and misuse of connected tools. Its ...