OpenAI to buy cybersecurity startup Promptfoo to better safeguard AI agents

Sam Altman, chief executive officer of OpenAI Inc., at the AI Impact Summit in New Delhi, India, on Thursday, Feb. 19, 2026.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 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 mo ...