OpenAI to Acquire AI Security Startup Promptfoo
Summary
OpenAI is acquiring Promptfoo, a startup that created a platform helping developers secure LLMs (large language models, AI systems trained on vast amounts of text) and AI agents (AI systems that can perform tasks autonomously). Promptfoo had raised over $23 million to build tools for testing and protecting these AI systems from security risks.
Classification
Affected Vendors
Related Issues
Original source: https://www.securityweek.com/openai-to-acquire-ai-security-startup-promptfoo/
First tracked: March 11, 2026 at 12:00 PM
Classified by LLM (prompt v3) · confidence: 95%