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

The acquisition of Promptfoo, which counts more than 125,000 developers and 30-plus Fortune 500 companies among its users, is OpenAI’s most direct move yet into AI application security. Its technology ...

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 is acquiring Promptfoo, a San Francisco-based AI security startup, in a move that signals how seriously the company is taking enterprise trust as it pushes deeper into agentic AI. The deal ...