---
title: Codex App
---

## Install

Install the [Codex App](https://developers.openai.com/codex/app/overview/) for macOS or Windows.

## Usage with Ollama

<Note>Codex works best with a larger context window. It is recommended to use a context window of at least 64k tokens.</Note>

### Quick setup

```shell
ollama launch codex-app
```

To choose a model:

```shell
ollama launch codex-app --model gpt-oss:120b
```

To configure without launching:

```shell
ollama launch codex-app --config
```

To restore your usual Codex profile:

```shell
ollama launch codex-app --restore
```

## Backups

Before overwriting Codex App config files, Ollama Launch saves backups under `~/.ollama/backup/codex-app/`. On Windows, `~` resolves to your user profile directory.