OpenAI acquires Promptfoo

OpenAI agreed to acquire Promptfoo. Reported deal value: Undisclosed. Status: Announced. Sector: AI security. Target headquarters context: Location not specified.

This page summarizes publicly available information about the transaction as of 2026-03-10. Figures and status may change as filings and press coverage update.

■ Promptfoo team and technology will integrate into OpenAI Frontier platform, which hosts AI agents with increasing autonomy ■ The deal reflects growing industry concern over AI agent vulnerabilities as systems gain access to sensitive data and real-world actions ■ OpenAI is acquiring cybersecurity startup Promptfoo in a strategic move to bolster defenses for its rapidly expanding AI agent ecosystem