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OpenAI to buy cybersecurity startup Promptfoo to better safeguard AI agents

  • Jonathan Vanian--CNBC
  • published date: 2026-03-09 18:37:22 UTC

Promptfoo's team will join Sam Altman-led OpenAI, and its technology will be integrated into the Frontier platform for AI agents.

OpenAI said Monday that it is acquiring the cybersecurity startup Promptfoo, which provides tools to help safeguard and test complex artificial intelligence systems. The Sam Altman-led firm did not … [+1571 chars]