Nvidia, Microsoft, Meta lead 25-signatory push against open-weight AI limits
What's the deal? Twenty-five companies and groups published an open letter on 24 July 2026, "Open Weights and American AI Leadership," urging Washington not to crack down on open-weight AI models. Signatories include Nvidia, Microsoft, Meta, Mistral, Palantir, IBMDealroom has a profile for this one. Try Dealroom →, Andreessen Horowitz, Hugging Face, Mozilla, and the Linux FoundationDealroom has a profile for this one. Try Dealroom →.
Why now? The letter landed a day after nearly 200 startups made the same plea to the White House, and amid a US debate over Chinese open models. In the week to 24 July 2026, the White House's Michael Kratsios accused China's Moonshot of building its Kimi K3 model by distilling AnthropicDealroom has a profile for this one. Try Dealroom →'s Fable 5; Treasury Secretary Scott Bessent floated sanctions for distillation he likened to theft.
Who didn't sign? OpenAI, Anthropic, and Google — the closed-model leaders — stayed off the list. Each would gain if Washington blocked Chinese open-model makers like Moonshot, whose Kimi K3 is described as the world's most powerful open-weight model.
What's the argument? The letter turns the safety case against closed labs, arguing that relying only on closed models "is not inherently safe" because they "can be breached, misused, or fail in ways that outsiders cannot detect." Openness, it says, "may be one of the most important paths to AI safety."
Jensen HuangDealroom has a profile for this one. Try Dealroom → fronted the effort with his first-ever post on X, which drew more than 11 million views. "The world needs both frontier closed models and frontier open models," the Nvidia chief executive officer wrote.
What about China? The letter calls distillation "a widely used technique" but does not excuse every abuse. Policymakers should not "conflate legitimate model-development techniques with misappropriation," it says, and unlawful extraction deserves "targeted" rules "rather than sweeping restrictions."
The response: The closed camp did not push back. OpenAI's Sam AltmanDealroom has a profile for this one. Try Dealroom → said he was "glad to see" the support, and Microsoft's Satya NadellaDealroom has a profile for this one. Try Dealroom → backed the message the same day. Elon MuskDealroom has a profile for this one. Try Dealroom →, whose SpaceX did not sign, quote-tweeted Huang: "This has my full support. Jensen is right."
The signal: The letter shows the AI industry splitting in public over how the US should answer China — with the chipmakers, infrastructure players, and open-model backers on one side and the closed-model frontier labs on the other. The fault line is no longer only technical; it is a fight over which approach Washington should protect.
Read more: The open letter (Nvidia), TechCrunch, CNBC, Politico, The Next Web
Image credit: NVIDIA Taiwan
