# Claude Code (/desktop/integrations/claude-code)

Use Jan as a local AI backend for Claude Code. Run inference entirely on your own hardware — your code never leaves your machine.

Jan replaces Claude's cloud models with local ones. You can assign a Jan model to each tier:
- **Large Model** (Opus) — for complex reasoning tasks
- **Medium Model** (Sonnet) — for balanced performance
- **Small Model** (Haiku) — for fast, lightweight tasks

## Setup [#setup]

<Steps>

### Open Settings [#open-settings]

Go to **Settings** → **Integrations** → **Claude Code**.

![Claude Code Integration](../_assets/claude-code-integration.png)

### Assign models [#assign-models]

Select a Jan model for each tier — Large, Medium, and Small. Click the model dropdown next to each tier to pick from your installed models. Use **Jan-Code** for a quick start by clicking **Setup** next to the suggestion.

![Claude Code Model Select](../_assets/claude-code-model-select.png)

### Save & Enable [#save--enable]

Click **Save & Enable**. Jan will now serve as the local backend for Claude Code.

</Steps>

## Environment Variables [#environment-variables]

You can add custom environment variables via the **+ Environment Variables** button if your setup requires additional configuration.