Open weights means a model's trained parameters are publicly downloadable: anyone can run, inspect, and fine-tune the model on their own infrastructure. It is d
It means a model's trained parameters are publicly downloadable, so anyone can run, inspect, and fine-tune the model on their own infrastructure. Most 'open' models ship weights under licenses with usage conditions.
Full open source would also include training data and code; open weights ships only the trained parameters. Open-weight models (Llama, Mistral, Qwen) enable data sovereignty, edge deployment, deep customization, and large cost reductions at scale.