Nvidia, Microsoft, Meta and Palantir were among more than 20 companies that signed a letter urging policymakers not to impose what they described as premature restrictions on open-weight artificial intelligence models. The group’s message highlights a growing debate over how governments should handle AI systems whose model weights can be shared more openly.
The companies’ argument comes as competition in AI continues to intensify. According to the report, Chinese open-weight models are gaining ground against leading products from U.S. companies, adding pressure to the policy discussion around access, innovation and competitiveness.
Supporters of open-weight models generally argue that broader access can help research, development and adoption move faster. In this case, the signatories appear to be warning that early limits could slow progress or weaken the position of American technology firms as rivals abroad improve their own offerings.
Notably, OpenAI and Anthropic did not sign the letter. Their absence underscores that the industry is not unified on how open-weight AI should be governed, even as major tech companies push lawmakers to be cautious about new restrictions.
