Closed AI model

An AI model whose maker keeps the weights to itself, also called a closed-weight model. So the model runs only where the maker allows, on its own servers or those of cloud partners. People and companies use it through the maker's apps or through an API, a connection that lets other software send it requests. A company using it sends its requests and data to those servers and accepts the maker's terms. The maker keeps its safety controls in place and decides when to update or retire the model. "Closed" refers only to the weights. Price is a separate matter, and some closed models are free to use.