OpenAI is buying Promptfoo, a security platform built to help companies find weaknesses in AI systems before those systems go live.
In a new company announcement, OpenAI says the deal focuses on addressing a growing problem in enterprise AI.
“As enterprises deploy AI coworkers into real workflows, evaluation, security, and compliance become foundational requirements. Enterprises need systematic ways to test agent behavior, detect risks before deployment, and maintain clear records to support oversight, governance and accountability over time.”
OpenAI says Promptfoo’s technology will be integrated into OpenAI Frontier, the company’s platform for building and operating what it calls AI coworkers.
Promptfoo is already widely used in the corporate world. OpenAI says the platform is trusted by more than 25% of Fortune 500 companies and also includes a popular open-source command-line tool and library for evaluating and red-teaming large language model applications.
The company says the acquisition will strengthen several areas inside Frontier, including built-in security and safety testing, deeper integration of evaluation tools into development workflows and stronger reporting systems for oversight, governance and compliance.
OpenAI says the combined platform will help enterprises identify risks such as prompt injection attacks, jailbreaks, data leaks, misuse of tools and agent behavior that falls outside company policy.
“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.”
OpenAI says the move is part of the infrastructure for the next stage of enterprise adoption, where AI systems are no longer just answering questions, but taking actions inside real business environments.
Promptfoo has 11 employees with an $85.5 million post-valuation after raising a total of $22.68 million. OpenAI did not disclose the terms of the deal, but said it will absorb the Promptfoo team.
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