# Open weights

A model whose weights (numbers that the model learned in training) are published for anyone to download and run, usually without the training data or code, and under the vendor's license terms.

Also called: Open-weight model, Open model

Kind of: Model

Related: Small language model, Parameters

Source: https://redfinchadvisory.com/lexicon/open-weights (version 1.0, changed 2026-10-21)