AI glossary
Open weights
An open-weights model is one whose trained parameters are published for download, so you can run, inspect and fine-tune it on your own machines.
Open weights are not the same as open source. You may get the weights without the training data or code, and the licence may restrict use, such as limits on commercial use or on very large services.
Having the weights means your data never leaves your machines, nothing changes unless you change it, and you can adapt the model freely within the licence.
Read the licence before you build on a model. "Free to download" and "free to use in your product" are different promises.
Learn it hands-on
These free lessons teach it with commands to run in a lab and checked tasks. Read them whole with no account.