OpenAI acquires Promptfoo to secure its AI agents as enterprise deployment accelerates
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OpenAI acquires Promptfoo to secure its AI agents
OpenAI announced Monday it has acquired Promptfoo, an AI security startup founded in 2024 to protect LLMs from online adversaries. The frontier lab said in a blog post that once the deal closes, Promptfoo's technology will be integrated into OpenAI Frontier, its enterprise platform for AI
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OpenAI Buying AI Security Startup Promptfoo to Safeguard AI Agents
OpenAI has agreed to buy Promptfoo, a startup that enables large businesses to find and fix security issues in artificial intelligence models during their development, part of a push to help corporate customers reduce possible risks from deploying AI software. The ChatGPT maker is set to announce
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OpenAI to buy cybersecurity startup Promptfoo to better safeguard AI agents
The Sam Altman-led firm did not disclose the terms of the deal, but said Promptfoo's team would join OpenAI. Promptfoo's security tools will be brought within OpenAI's Frontier platform for AI agents. "As AI agents become more connected to real data and systems, securing and validating them is
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The open-source AI red-teaming tool used by Fortune 500 companies is now part of OpenAI
The acquisition of Promptfoo, which counts more than 125,000 developers and 30-plus Fortune 500 companies among its users, is OpenAI's most direct move yet into AI application security. Its technology will go into Frontier, the company's enterprise agent platform launched just a month ago. When
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OpenAI to acquire Promptfoo to expand AI application testing capabilities - SiliconANGLE
OpenAI to acquire Promptfoo to expand AI application testing capabilities OpenAI Group PBC announced today that it had entered an agreement to acquire testing and security evaluation platform for artificial intelligence applications startup Promptfoo Inc. for an undisclosed price. Founded in
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OpenAI Is Acquiring Promptfoo to Build New Enterprise Tools in Frontier
OpenAI Frontier will offer security testing and red teaming tools OpenAI announced its plans to acquire the artificial intelligence (AI) security platform Promptfoo on Monday. The San Francisco-based AI giant said that it was in the process of finalising the deal, which is currently subject to
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OpenAI to buy AI security startup Promptfoo to safeguard AI agents
OpenAI plans to acquire Promptfoo, a startup that helps businesses detect and fix security issues in AI models during development. Its technology will be added to OpenAI Frontier, a platform for managing AI agents. The deal supports safer enterprise deployment, though financial terms were not
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OpenAI Bets On AI Agent Security With Promptfoo Acquisition
OpenAI said it would integrate Promptfoo's technology "directly into OpenAI Frontier, OpenAl's platform for building and operating AI coworkers." ChatGPT maker OpenAI said Monday that it had acquired Promptfoo, a company focused on helping developers and enterprises build secure AI
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OpenAI Plans to Acquire Promptfoo to Secure Agentic AI | PYMNTS.com
Upon closing of the acquisition, which is subject to customary closing conditions, OpenAI will integrate Promptfoo's technology into OpenAI Frontier, which is the company's platform for building and operating AI coworkers, OpenAI said in a Monday (March 9) announcement. The Promptfoo platform
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Sam Altman's OpenAI Acquires Promptfoo to Fortify AI Agent Security
Promptfoo's Security Tools will be Brought Within OpenAI's Frontier Platform for AI Agents OpenAI has confirmed its acquisition of Promptfoo, a cybersecurity startup specializing in testing and securing AI systems. The deal could strengthen protections for AI agents as the technology becomes more
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OpenAI Acquires Promptfoo to Strengthen AI Agent Security
OpenAI has announced the acquisition of cybersecurity start-up Promptfoo, which specializes in tools for testing and securing artificial intelligence systems. The financial terms of the deal were not disclosed. Promptfoo's team will join OpenAI, and its technology will be integrated into the
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OpenAI to acquire AI security platform Promptfoo: Here's why it matters
With Promptfoo's technology integrated into Frontier, enterprises will be able to run automated security tests directly within the platform. OpenAI has announced plans to acquire Promptfoo, an AI security platform that helps companies test and secure their AI systems during development. The move
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OpenAI has acquired Promptfoo, an AI security startup that helps companies test security vulnerabilities in LLMs. The deal integrates Promptfoo's automated red-teaming technology into OpenAI Frontier, the enterprise agent management platform launched last month. With over 25% of Fortune 500 companies already using Promptfoo's tools, the acquisition signals OpenAI's commitment to making AI agents safe for critical business operations.
OpenAI Acquires Promptfoo to Strengthen AI Security
OpenAI announced Monday that it has acquired Promptfoo, an AI security startup founded in 2024 by Ian Webster and Michael D'Angelo to protect LLMs from online adversaries
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. The ChatGPT maker plans to integrate Promptfoo's technology directly into OpenAI Frontier, its recently launched enterprise agent management platform designed to help organizations build and manage AI agents2
. Terms of the acquisition were not disclosed, though Promptfoo had raised $23 million in total funding and was valued at $86 million after its Series A round in July 2025, according to Pitchbook1
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Source: The Next Web
The acquisition marks OpenAI's most direct move yet into AI application testing and cybersecurity. Promptfoo's open-source framework and enterprise platform are already used by more than 125,000 developers and over 25% of Fortune 500 companies, spanning retail, telecoms, financial services, and media sectors
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. The company raised an $18.4 million Series A led by Insight Partners, with participation from Andreessen Horowitz, which had also backed its $5 million seed round3
.Addressing Security Vulnerabilities in AI Models
The deal underscores how frontier labs are scrambling to prove their technology can be used safely in critical business operations as AI agents gain access to production systems. Promptfoo's platform addresses risks including prompt injection, data leakage, jailbreak attacks, and unsafe tool execution by acting as an automated adversary
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. Rather than relying on manual penetration testing, the platform uses specialized models and agents that behave like attackers, probing AI applications through chat interfaces or APIs4
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Source: SiliconANGLE
When an attack succeeds, Promptfoo records it, analyzes why it worked, and iterates through an agentic reasoning loop to refine tests and expose deeper vulnerabilities. The technology also targets application-level failures where AI systems promise users things they cannot deliver or reveal database contents inappropriately
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. This capability becomes critical as OpenAI positions Frontier to create what it calls "AI coworkers" with access to CRM platforms, data warehouses, and internal ticketing tools2
.Integration into OpenAI Frontier Platform
Once the deal closes, Promptfoo's technology will enable automated red-teaming within OpenAI Frontier, allowing the platform to evaluate agentic workflows for security concerns and monitor activities for risks and compliance needs
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. The system supports regression testing, allowing organizations to compare outputs across model versions or configuration changes to identify behavioral differences before software updates are released5
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Source: PYMNTS
"OpenAI acquiring Promptfoo signals a clear commitment to making enterprise AI not just powerful, but safe and reliable at scale," said Ganesh Bell, managing director at Insight Partners
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. Promptfoo CEO Ian Webster added that "as AI agents become more connected to real data and systems, securing and validating them is more challenging and important than ever"3
.OpenAI has been building out Frontier at speed since launching the platform on February 5. Early customers include Uber, State Farm, Intuit, and Thermo Fisher Scientific—organizations for whom a misbehaving agent represents significant liability
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. The company has also announced Frontier Alliances with Accenture, Boston Consulting Group, Capgemini, and McKinsey to drive enterprise deployment4
.Related Stories
Open-Source Commitment and Competitive Landscape
OpenAI stated it expects to continue building out Promptfoo's open-source offering, which currently has over 248 contributors and allows developers to test various AI-related prompts and compare the performance of large language models like GPT, Anthropic's Claude, and Google's Gemini
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. This commitment to maintaining the project under its current license will be closely watched by Promptfoo's developer community4
.The acquisition comes as competition intensifies in AI security. Anthropic launched Claude Code Security in February, targeting similar vulnerability scanning use cases, while OpenAI separately rolled out Codex Security, an AI-powered application security agent for software repositories
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. The convergence suggests that as AI agents move into production at scale, governance and security capabilities are becoming defining battlegrounds in enterprise AI. For businesses deploying these systems, the ability to test agent behavior, detect risks before deployment, and maintain clear records for oversight will determine whether AI agents deliver productivity gains or create new vulnerabilities in critical operations.References
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