OpenAI announced that it’s acquiring AI security company Promptfoo to enhance its Frontier platform with security testing capabilities.

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 ...

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 ...

Promptfoo raised $18.4 million in a Series A round in July 2025 led by Insight Partners with participation from Andreessen Horowitz, according to the company’s own announcement. Promptfoo said at the ...

OpenAI (OPENAI) revealed plans today to acquire Promptfoo, a startup that helps enterprises identify and correct vulnerabilities during the development of artificial intelligence systems. Promptfoo ...

OpenAI is acquiring Promptfoo, the AI red-teaming startup used by 125k developers and 30+ Fortune 500 firms, to strengthen ...

OpenAI’s latest acquisition addresses a security need Jamieson O’Reilly, security advisor at OpenClaw, raised during an exclusive interview with Infosecurity ...

OpenAI’s internal AI data agent searches 600 petabytes across 70,000 datasets, saving hours per query and offering a blueprint for enterprise AI agents.

Investing.com -- OpenAI announced plans to acquire Promptfoo, an AI security platform that helps enterprises identify and fix vulnerabilities in AI systems during development. The company said it will ...