Nvidia, Microsoft, Meta Push Back on Open-Weight AI Restrictions

A coalition of more than 20 technology companies, including Nvidia, Microsoft, Meta, and Palantir, released a joint letter urging U.S. policymakers to avoid imposing premature restrictions on open-weight artificial intelligence models. The group argues such limits would stifle competition and push innovation overseas, according to CNBC.

Open-weight AI models—systems that users can download, modify, and run on their own infrastructure—have become a flashpoint in recent policy debates. The letter arrives as officials weigh whether to restrict access to Chinese open-weight models following concerns about intellectual property theft and competitive threats.

The controversy intensified earlier this month when Moonshot AI, a Chinese startup, released Kimi K3, a model that outperforms some leading American offerings on industry benchmarks. U.S. Treasury Secretary Scott Bessent told CNBC the Trump administration would investigate whether Chinese companies were stealing American intellectual property and noted the government's ability to impose sanctions.

The case for openness

In their letter, the tech companies contended that open-weight models strengthen competition and ensure AI benefits are "broadly shared rather than concentrated in a few hands." They challenged the notion that closed, proprietary models are inherently safer.

"Relying solely on closed models is not inherently safe: they can be breached, misused, or fail in ways that outsiders cannot detect," the letter stated. "And concentrating advanced AI capabilities behind a small number of closed models compounds that risk."

Both Nvidia CEO Jensen Huang and Microsoft CEO Satya Nadella shared the letter on their personal social media accounts, signaling executive-level support for the position.

Notable absences

OpenAI and Anthropic, two companies valued at nearly $1 trillion each and preparing for potential IPOs, did not sign the letter. Both firms primarily develop proprietary, closed models.

Greg Brockman, OpenAI's president, said Thursday the company supports broad access to AI and has not participated in discussions with the administration about banning Chinese open-weight models. "I think that, that fundamentally, AI and AI usage is something that is actually very important to democratize," Brockman told reporters in New York.

The distillation debate

White House advisor Michael Kratsios said Wednesday that Moonshot AI developed Kimi K3 by distilling Anthropic's technology—a training method where a smaller model learns from a more capable system's outputs. Kratsios distinguished between legitimate distillation and "large-scale, covert industrial distillation aimed at stealing proprietary U.S. technology," which he called unacceptable.

The coalition's letter acknowledged these concerns but argued they should be addressed through "targeted legal and commercial frameworks" rather than sweeping restrictions that could hamper beneficial AI innovation techniques.

"Our AI leadership will be judged not by one frontier AI model, but by whether the United States builds a strong, open ecosystem that diffuses into every sector," the letter concluded.

Why it matters

The debate over open-weight models represents a fundamental tension in U.S. AI policy: how to maintain technological leadership and protect intellectual property while preserving the open innovation that has historically driven American tech competitiveness. The coalition's intervention suggests major industry players fear regulatory overreach could do more harm than good, potentially fragmenting the global AI ecosystem and disadvantaging U.S. companies in the long run.

CNBC first reported these details.