[mathfailure]

Is it a locally running model?

[gglon]

It seems like a model is not included; you need to set an API endpoint in a configuration https://tmuxai.dev/getting-started#environment-variables

[mathfailure]

Then why would anyone let this thing into their terminal..?

[dcre]

You can point it at any API you want, including local. The tool is agnostic, like nearly all such tools.