Choose a model

Different models suit different work. You choose which one answers you, and how much thinking it does first.

Pick the default model

Open Settings → General to pick the default chat model. The same page shows how that model reasons.

You can also change the model for a single session, from the field where you describe your task.

The models page lists every model running at Grunden today, what each one accepts, and what it costs.

Choose how much reasoning to spend

Some models let you set how long they think before they answer. More reasoning usually means a better answer and a slower one.

Level	What it does
Minimal	Uses a very small amount of reasoning.
Low	Uses a lighter reasoning pass before answering.
Medium	Balances speed and reasoning depth.
High	Spends more time reasoning before answering.
Max	Uses the deepest reasoning the model offers.

Not every model exposes these levels. Some decide their own reasoning path, and the app says so instead of offering a choice.

Tip

Start at the default. Raise the level when an answer is shallow or a task has several steps. Lower it for quick, simple work.

Check that your model can read your file

You can attach files to a task, but not every model reads every type. If you attach something the current model cannot read, the app tells you before you send it.

If you attach	And the model cannot read it
An image	Choose a model that accepts image input, or describe the image in words.
A PDF	Choose a model that accepts PDFs, or attach a Word file instead.
Audio or video	Choose a different model.

The models page marks what each model accepts.