Roughly 25 technology companies, including Nvidia, Microsoft, Meta, and Palantir, have signed an open letter urging US policymakers not to restrict open-weight AI models. Google, OpenAI, and xAI back the effort publicly but have not signed it. The letter casts open models as central to keeping American AI ahead of China.
Nvidia, Microsoft, Meta, and Palantir are among the roughly 25 signatories of an open letter telling Washington to keep its hands off open-weight AI models. The document, titled "Open Weights and American AI Leadership" and dated July 24, 2026, argues that clamping down on these models prematurely would hand a competitive advantage to rivals, particularly China.
Notably, Google, OpenAI, and xAI have expressed public support but remain off the official signatory list. Hugging Face, a16z, Mistral, Dell, and IBM have also put their names to the document.
What the letter argues
The core claim is that open-weight models — where companies release model parameters publicly so others can build on them — are good for America. It draws a parallel to the open-source software movement of the 1980s, when critics warned that freely sharing code would be a security disaster. Instead, according to the letter, "open-source software became the backbone of the modern internet".
Beyond that historical analogy, the letter argues that open weights widen access for smaller companies and researchers and lower barriers to entry for competitors. Perhaps most important, it says, they improve security through transparency and community audits, on the logic that independent researchers spot vulnerabilities faster than any internal security team.
China sets the stakes
Competitive pressure from China runs through the framing, which points to Chinese models like Moonshot AI’s Kimi K3 as a real and advancing threat to American AI dominance. The signatories, meanwhile, span the AI supply chain — chip makers like Nvidia, cloud infrastructure providers like Dell and IBM, and AI-native firms like Hugging Face and Mistral.
Support without a signature
Nvidia CEO Jensen Huang shared the letter in what was reportedly his first-ever post on X. OpenAI CEO Sam Altman also commended the initiative. Yet the gap between supporting and signing matters: verbal backing offers alignment with the open community without the binding commitment of a logo on a public document.
Source: Crypto Briefing
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