Nvidia, Microsoft, Meta Lead 25-Firm Letter Defending Open-Weight AI Models
On July 24, 2026, Nvidia CEO Jensen Huang’s first X post shared a joint letter—signed by Nvidia, Microsoft, Meta, IBM, Dell, Palantir, Hugging Face, a16z and others—urging U.S. policymakers to avoid premature restrictions on open-weight AI models as the White House weighs limits on Chinese open models.
TLDR
Nvidia, Microsoft, Meta, and more than 20 other companies on July 24, 2026 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 days after House AI kill-switch reporting tied to 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, lawmakers floated DHS kill-switch / throttle authority for frontier U.S. models after the OpenAI–Hugging Face cyber-eval disclosure.
Why this story matters
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. The next move is the White House’s Chinese-model posture and whether “open weights = American leadership” survives kill-switch and export-control politics.
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)
Featured Image Alt Text
Engraved open lock and weight glyphs shared by Nvidia, Microsoft, and Meta seals against a Capitol outline for the open-weights policy letter.
Tags
Nvidia, Microsoft, Meta, Open Weights, Policy, Open Source, Jensen Huang, Regulation, July 24