OpenAI acquires Promptfoo to bolster security for enterprise AI coworkers
OpenAI is acquiring Promptfoo to integrate its security technology into Frontier, allowing businesses to automate risk detection and maintain accountability while deploying AI coworkers into professional workflows.
OpenAI has acquired Promptfoo, an AI security platform designed to help businesses identify and fix weaknesses in their artificial intelligence (AI) systems.
This move focuses on enhancing the safety and evaluation capabilities of OpenAI Frontier, which is a platform used for creating and managing AI coworkers. As these AI agents become more integrated into professional daily tasks, the need for robust security and compliance measures grows significantly.
Promptfoo has established itself by providing tools trusted by more than a quarter of Fortune 500 companies. Its services include an open-source library for red-teaming, a process where experts simulate cyber attacks to find and resolve potential flaws.
“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 Srinivas Narayanan, CTO of B2B Applications at OpenAI, highlighting the value of this partnership for large-scale operations.
The integration will allow developers to automate security testing directly within their workflows. This includes protecting against prompt injections, where users try to manipulate the AI, and jailbreaks, which are attempts to bypass safety rules. Furthermore, the platform will offer better traceability to help organisations meet strict governance and risk requirements.
“We started Promptfoo because developers needed a practical way to secure AI systems. 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,” Ian Webster, Co-founder and CEO of Promptfoo, noted.
While the acquisition is still subject to the usual closing conditions, both teams plan to continue supporting the existing open-source project alongside their new enterprise features. This development suggests a shift in the AI industry towards prioritising accountability and safety as autonomous agents take on more complex roles in the workplace.
Last week, OpenAI introduced a potential solution to modern workloads with the launch of GPT-5.4, a new frontier model available in ChatGPT, the API, and Codex. It is designed specifically to handle the complexities of professional work.
These developments come soon after the ChatGPT maker secured a staggering $110 billion in new investment at a pre-money valuation of $730 billion. The funding round was led by major strategic partners including Amazon, which is investing $50 billion, alongside SoftBank and NVIDIA, who are each contributing $30 billion.