In more detail
An AI model is ultimately a giant file of numbers — its weights. Open weights means the maker publishes that file, so anyone can download the model and run it on their own computer rather than only renting access to a copy hosted on a company’s servers.
Why it matters: privacy, because your data never leaves your machine; cost, because there are no per-use fees; and control, because nobody can quietly change or retire the model you depend on. It’s the difference between being handed the recipe and only being allowed to order the dish.
Goes with