# Use Athena in Koder and Omni

**Athena** can be the model that Koder and Omni run on in aixplain Desktop, and that Koder runs on in your terminal. With Athena chosen, every request in a session goes to the model it needs, and you don't switch models by hand. This article explains how to choose Athena, how to switch away from it and what to do when it isn't listed.

> Athena is available in Koder and Omni in aixplain Desktop on macOS, Windows and Linux, and in the Koder CLI. You need to be signed in to aixplain, and you pay for the models that answer from your aixplain credits. aixplain Desktop is in early releases (version 0.x), so features can change from one release to the next.

## Athena is the default

Athena is the default model for new sessions in Koder, on Desktop and in the CLI. If your workspace's catalog doesn't include Athena, Koder starts you on another model instead.

The model picker lists Athena as **Auto**, in the first row. The composer shows **Athena** while it's selected.

## Choose Athena in Koder

1. Open a Koder session in aixplain Desktop.
2. Open the model picker: click the model in the composer, or press Cmd + '.
3. Choose **Auto**, the first row.

In the Koder CLI, type `/models` and choose **Auto**.

## Choose Athena in Omni

Omni in aixplain Desktop uses the same model picker as Koder.

1. Open Omni.
2. Click the model in the composer.
3. Choose **Auto**, the first row.

Athena suits everyday work in Omni too, like reading and summarizing documents, so you don't have to swap models by hand.

## Switch to one model

When you want one model for everything, for example the strongest model for a hard task, open the model picker and choose it. The picker shows each model's price, and the **About** details for **Auto** explain that you pay the price of the model it picks for each request.

To go back, choose **Auto** again.

## Route to models you choose

To keep the routing but pick the models yourself, use **Automode (Custom)**, the row under **Auto**. See **[Set up Automode with your own models](https://www.aixplain.com/support/articles/set-up-automode-with-your-own-models)**.

## Limitations

- Athena needs an aixplain sign-in. With only your own provider or a plan you connected, use Automode or pick a model directly.
- You can't change the models behind Athena's tiers from the app.

## Troubleshooting

### I don't see Auto in the model picker

Check that you're signed in to aixplain in **Settings → Account & usage**. If you are, your workspace's catalog may not include Athena: ask your workspace admin.

### Koder started on a different model

You picked another model in an earlier session, or Athena isn't in your workspace's catalog. Open the model picker and choose **Auto**.

## Get help

- **Learn how Athena decides:** see **[How Athena works](https://www.aixplain.com/support/articles/how-athena-works)**.
- **Get started with the app:** see **[Get started with Koder](https://www.aixplain.com/support/articles/get-started-with-koder)** and **[Get started with Omni](https://www.aixplain.com/support/articles/get-started-with-omni)**.
- **Report a problem:** email **care@aixplain.com**.