AI Nvidia Open Weights Letter Doubled To 50 Without Amazon And Anthropic By Sandy Carter ,
Forbes contributors publish independent expert analyses and insights. Sandy Carter, CEO at EQUS.ai, Top 10 Microsoft MSN AI Entrepreneur Follow Author Jul 25, 2026, 09:19pm EDT Jul 25, 2026, 10:52pm EDT --:-- / --:-- This voice experience is generated by AI. Learn more . This voice experience is generated by AI. Learn more . Summary Jensen Huang's "Open Weights" letter, urging Washington against AI model restrictions, rapidly doubled its signatories to 50 in a single day, including OpenAI and Google. This swift expansion, following Huang's X post, highlights a new, accelerated tempo for tech policy formation. Notably, Amazon and Anthropic remained absent, a significant strategic decision given their market position and Anthropic's public stance on AI safety. While the letter promotes openness for "American AI leadership," critics observe a self-serving aspect, as many signatories, including organizer Nvidia, maintain proprietary layers elsewhere. Businesses must recognize that open weights, while offering model control, don't address critical issues like chip access, data provenance, or the auditability of AI agent actions, demanding proactive planning for governance and liability.
Nvidia CEO Jensen Huang posts his first X comment on Open Weights with 25 companies in support. (Photo by Justin Sullivan/Getty Images) Getty Images On July 24 Jensen Huang made the first post of his life on X. He used it to share “Open Weights and American AI Leadership,” a letter urging Washington not to restrict downloadable AI models. Nearly every outlet that covered it reported the same striking detail.
At that time, OpenAI had not signed. That is no longer true.
Huang's X post carried the original 25 signatures.
Jensen Huang, CEO of Nvidia, first post on X showcases the 25 companies that signed the Open Models letter. Sandy Carter The letter now carries 50, exactly twice as many. OpenAI is among the 25 names added, along with Google, AMD, Cisco, Cloudflare, GitHub, Block and Ollama.
Microsoft's posting is updated to show the new 35 Companies who have signed the Open Weights Letter. Sandy Carter MORE FOR YOU Anthropic and Amazon are absent from every version, and that pairing is the most interesting thing missing from the list.
The sequence matters more than the roster. This was not a coalition assembled over months and unveiled when it was complete. It went out with 25 names, Huang's post cleared 11 million views, and the signatures kept arriving while the coverage was still being written.
Roughly two dozen companies joined after publication. Two of the hosted copies carried different counts on the same afternoon.
That tells you something about how technology policy gets made now.
The document was the easy part. The distribution was the event, and the signatures followed the distribution. Any company weighing whether to sign a public letter should read this as the new tempo: the window between a position becoming visible and becoming crowded is now measured in hours.
Amazon and Anthropic are absent from the list today July 25, 2026.
Amazon is Anthropic’s largest investor, and Anthropic trains and serves on Amazon’s Trainium silicon among other hardware. Anthropic just took over the #1 position in the Enterprise. Google, also an Anthropic backer, signed anyway, which makes the Amazon alignment the more specific one.
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