A coalition of major technology companies is pressing US lawmakers to leave open AI models alone.

According to reporting via MSN, Nvidia, Microsoft and Meta jointly appealed to lawmakers in support of open-source AI models, arguing that heavy-handed rules could hold back competition and innovation.

The effort appears to be broad. The Global Times reports that Nvidia and more than 20 companies warned against "premature restrictions" on open-weight models. Yahoo Finance reports that Palantir Technologies has also joined Nvidia in defending open-weight AI models.

A quick translation for non-engineers: most well-known AI systems are "closed," meaning the public cannot see or reuse the underlying settings that make them work. "Open-weight" models release those settings, letting outside developers, researchers and companies run, study and build on the technology themselves. Supporters say that openness fuels competition and faster progress; critics worry it can make powerful tools harder to control.

The companies' central message, as summarized across these sources, is that lawmakers should avoid restrictive regulation that could slow the field down. The reports frame the appeal as a response to broader US anxiety about how to handle rapidly advancing AI.

The sources do not detail exactly what rules are being proposed, what specific safeguards the companies would accept, or how lawmakers have responded.

Why it matters: some of the most powerful players in technology are trying to shape the rules of AI before they are written, and whether open models stay freely available could determine who gets to build the next generation of artificial intelligence.