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 acquires Promptfoo to improve AI agent security, adding automated testing, red teaming, and risk monitoring tools to its enterprise Frontier platform.

OpenAI built an "automated attacker" to test Atlas' defenses. The qualities that make agents useful also make them vulnerable. AI security will be a game of cat and mouse for a long time. OpenAI is ...