OpenAI is beefing up its AI defenses in its own backyard, announcing today that it is acquiring Promptfoo, a San Mateo ...

OpenAI has acquired Promptfoo, an open-source AI red-teaming platform used by 25% of Fortune 500 companies, to build security into its Frontier agent stack.

Promptfoo Inc., a broadly adopted open-source framework for artificial intelligence evaluation and testing, today announced it has raised $18.4 million in an early-stage funding led by global software ...

OpenAI has acquired AI security startup Promptfoo to bolster enterprise trust in its agentic AI platform, Frontier. This move integrates Promptfoo's vulnerability-testing technology, addressing a ...