AI firms urge U.S. policymakers to avoid broad restrictions on open-weight models

A group of AI companies, including Hugging Face, Meta, Microsoft, Mistral, and Nvidia, signed an open letter urging U.S. policymakers to avoid imposing broad restrictions on open-weight AI models. The letter argues that policymakers should not conflate legitimate model-development techniques, such as distillation, with misappropriation of intellectual property.

The letter states that distillation—a widely used technique for model improvement—plays an important role in AI innovation and should not be restricted. It emphasizes that concerns about unlawful extraction of value from closed models should be addressed through targeted legal and commercial frameworks rather than sweeping restrictions.

Signatories include Hugging Face, Meta, Microsoft, Mistral, Nvidia, and Replit, among others. The letter comes as Washington debates responses to alleged Chinese AI intellectual property theft and growing capabilities in the sector. While the letter does not explicitly mention China, it follows reports that the Trump administration has been considering bans on Chinese open-weight models and potential sanctions against Chinese AI companies.

The letter also challenges arguments that open-weight models are inherently dangerous due to expanded access without oversight. It contends that open models broaden defensive capabilities, increase transparency, and allow vulnerabilities to be discovered and remediated across multiple teams.

The push reflects a divide within the AI industry. Companies like OpenAI and Anthropic, which are not signatories, have urged responses to alleged IP theft by Chinese firms as open-weight models grow in capability. The outcome of this debate could have significant implications for business models reliant on proprietary AI systems.

The letter encourages policymakers to expand access to compute for startups and researchers, invest in shared training assets, and avoid premature restrictions on open models that could stifle competition or drive innovation overseas.