Hubs host weights, configs, datasets, and demos, which is how open-weight ecosystems actually spread. Hugging Face is the largest hub, with millions of public models. On August 27, 2026, The Information and Reuters reported Nvidia agreed to acquire Hugging Face for $12.9 billion — unconfirmed by either company at publication. Trust is the hard part: anyone can upload a model card that overclaims safety or origin. Enterprises still pin hashes and scan weights rather than pulling latest by name.