A model trained on large amounts of material to learn language patterns and process or generate text. It supplies language capabilities behind many assistants.
An everyday example
An assistant turns meeting notes into three action items.
When you’ll encounter it
Compare the underlying model, supported inputs and material limits when choosing an AI tool.
What to watch for
The model is one component of an application. Web access, file access and persistent memory depend on the application; some models also accept images or other media.
Related terms & sources
Prepared from the public sources below. Examples illustrate the concept. Reviewed on 2026-10-15.