AI model
Also called model.
An AI model is the trained system an application uses to make predictions or generate responses.
Example
Grok's chat app and a coding tool can both call a model. The model produces text or a tool request. The app decides whether that request may run.
Why it matters
The app around the model supplies the promptA prompt is the instructions, question, or other input you give an AI model to guide its response., the tools, and the limits. Two apps can use related models and still behave differently because their instructions and permissions differ.
Common confusion
The model is not the whole product. Muse Spark is a model name. Muse is the agent product that uses a model.
Sources
Updated September 30, 2026.