Google, OpenAI, and xAI back an open letter urging US policymakers not to restrict open-weight AI models, joining 25 signatories including Nvidia

Leading American technology firms have jointly endorsed open-weight artificial intelligence models. They believe this approach is crucial for maintaining United States leadership…

Chinese open-weight models are gaining steam against leading offerings from American companies. OpenAI and Anthropic did not sign the letter.

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

Can you guess who didn't sign on to the group letter?