The Open Secure AI Alliance, with founding members including Adobe, CrowdStrike, Hugging Face and Dell Technologies, follows a public letter, signed by a wide range of companies including OpenAI, which advocates for open-weight AI models.

Twenty-five companies signed a letter defending open models days after a Chinese AI helped Hugging Face survive a hack triggered by OpenAI.

Nvidia, Microsoft, Meta and 22 others signed an open letter defending open-weight AI, led by Jensen Huang's first tweet. OpenAI, Anthropic and Google didn't.

Letter explaining support comes amid rift over AI development philosophies and governance