Nvidia-Led Open-Weights Letter: Coalition Fight—OpenAI, Anthropic, Google Absent
Nvidia, Microsoft, Meta and ~25 firms urged Washington to avoid premature restrictions on open-weight models and sweeping distillation bans—Huang’s first X post. OpenAI, Anthropic, and Google did not sign. Lands as the White House weighs Chinese open-model limits.
Corrected October 14, 2026: Corrected the timing of the House kill-switch bill relative to the letter, and replaced general context with the Lieu–Moran bill's DHS graduated emergency powers; corrected an internal link.
Open-weight policy is now a coalition fight, not a fringe OSS debate. Chip vendors, hyperscalers with open-model stakes, and enterprise software names are lobbying for a plural frontier—while frontier closed labs stay off the letter.
Nvidia, Microsoft, Meta, and more than 20 other companies published a joint letter—“Open Weights and American AI Leadership”—urging U.S. policymakers to avoid premature restrictions on open-weight AI models and sweeping bans on distillation. Jensen Huang used his first-ever X post to promote the letter. OpenAI, Anthropic, and Google were not among the signatories. The push lands as the White House weighs restrictions on Chinese open-weight models over national-security concerns—and a day after a House AI kill-switch bill was introduced following OpenAI’s cyber-eval incident.
Who signed, who didn’t
| Group | Names (reported) |
|---|---|
| Signers | Nvidia, Microsoft, Meta, IBM, Dell, Palantir, Hugging Face, Andreessen Horowitz, Perplexity, and others (~25 orgs total) |
| Absent (noted by press) | OpenAI, Anthropic, Google |
Huang’s X framing: open models strengthen safety and cybersecurity, accelerate innovation and diffusion, and enable sovereignty—“the world needs both frontier closed models and frontier open models.”
Policy argument
The letter (also shared via Microsoft corporate-responsibility channels and covered by POLITICO, Reuters, Fortune, Tom’s Hardware) makes roughly three claims:
- Access and competition — open weights expand startup/university access and prevent a few closed labs from owning the stack.
- Security through auditability — more researchers can inspect, red-team, and patch than closed single points of failure.
- Targeted fixes, not bans — concerns about tech theft or misuse should use legal/commercial frameworks, not broad open-model prohibitions that could drive users to Chinese systems.
Context: Washington has been debating whether Chinese open-weight models should face bans or tougher controls; the same week, Reps. Lieu and Moran introduced a bill giving DHS graduated emergency powers, up to shutdown, over covered AI technology after the OpenAI–Hugging Face cyber-eval disclosure.
Limits
- Letter text and signer list are press-relayed; treat “~25” as reporting-phase count.
- Absence of OpenAI/Anthropic/Google is noted by press—not a joint counter-letter.
- White House Chinese-model posture remained unsettled at publication.
Sources
- Reuters: Nvidia, Microsoft and other tech giants back open-source AI models (July 24, 2026)
- POLITICO: Big Tech companies defend open-weight AI models (July 24, 2026)
- Fortune: Jensen Huang’s first X post shares open-weights letter (July 24, 2026)
- Tom’s Hardware: Nvidia and 24 other companies sign open-weights letter (July 24, 2026)
- Times of AI prior: House AI kill-switch bill / DHS authority (July 23, 2026)
- GovInfo: H.R. 9917 (119th Congress), introduced July 23, 2026 (bill text, PDF)