Jensen Huang joins X, first post torches closed AI

Jensen Huang picked a hell of a first post. Nvidia's leather-jacketed CEO joined X and immediately shared "Open Weights and American AI Leadership" — a joint letter arguing that open models are the way to keep the U.S. ahead.

His pitch: closed models are single points of failure. "If everything just becomes one single model, one single point of attack, one single source of failure, the world is much more vulnerable." The letter frames open weights as a boost to safety, cybersecurity, sovereignty, and innovation — and warns against premature restrictions.

The signatures are the real headline. NVIDIA, Microsoft, Meta, IBM, Dell, Mistral, Mozilla, Hugging Face, the Linux Foundation, Perplexity, and Y Combinator — roughly 20 orgs — all backing the same paper. Huang's line: "The world needs both frontier closed models and frontier open models."

Why it matters: when the company selling the GPUs and its biggest customers all lobby for open weights, the closed-vs-open debate just became policy.