OpenAI will acquire artificial intelligence cybersecurity company Promptfoo, as it continues to expand its enterprise AI offerings.
Promptfoo’s security tools allow businesses to find vulnerabilities in their AI systems during development. Its technology will be integrated into OpenAI’s Frontier platform for enterprise AI agents.
“Promptfoo brings deep engineering expertise in evaluating, securing, and testing AI systems at enterprise scale. Their work helps businesses deploy secure and reliable AI applications, and we’re excited to bring these capabilities directly into Frontier,” said OpenAI CTO of B2B Applications Srinivas Narayanan.
“As AI agents become more connected to real data and systems, securing and validating them is more challenging and important than ever. Joining OpenAI lets us accelerate this work, bringing stronger security, safety, and governance capabilities to the teams building real-world AI systems,” said Promptfoo CEO Ian Webster.
Promptfoo’s team will also be integrated into OpenAI.
The companies did not disclose the financial terms of the deal. Promptfoo was valued at US$86 million after its July 2025 funding round, while OpenAI was valued at $730 billion before a $110 billion round last month.
OpenAI launched Frontier last month, saying the platform would help businesses in creating and deploying autonomous AI tools. Companies like HP, Oracle, Uber, and Intuit are among the first to use Frontier, per OpenAI.
Enterprise customers represent around 40% of OpenAI’s business, CFO Sarah Friar said in January, and the company aims to reach 50% by the end of 2026.
The acquisition also comes as OpenAI seeks to purchase other artificial intelligence startups. It reportedly acquired AI health data business Torch in January, and the creator of open-source AI agent OpenClaw joined OpenAI in February.
