> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gourmand.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Configure Vertex AI with Gobi

<Info>
  Enable the [Vertex AI API](https://console.cloud.google.com/marketplace/product/google/aiplatform.googleapis.com)
  and set up [Google Application Default Credentials](https://cloud.google.com/docs/authentication/provide-credentials-adc)
</Info>

## Configuration

<Tabs>
  <Tab title="YAML">
    ```yaml title="config.yaml" theme={null}
    models:
      - name: <MODEL_NAME>
        provider: vertexai
        model: <MODEL_ID>
        env:
          projectId: <PROJECT_ID>
          region: us-east5
    ```
  </Tab>

  <Tab title="JSON (Deprecated)">
    ```json title="config.json" theme={null}
    {
      "models": [
        {
          "title": "<MODEL_NAME>",
          "provider": "vertexai",
          "model": "<MODEL_ID>",
          "projectId": "[PROJECT_ID]",
          "region": "us-east5"
        }
      ]
    }
    ```
  </Tab>
</Tabs>

## How to Enable Vertex AI Express Mode

You can use Vertex AI in [express mode](https://cloud.google.com/vertex-ai/generative-ai/docs/start/express-mode/overview) by only providing an API Key. Only some Gemini models are supported in express mode for now.

<Tabs>
  <Tab title="YAML">
    ```yaml title="config.yaml" theme={null}
    models:
      - name: <MODEL_NAME>
        provider: vertexai
        model: <MODEL_ID>
        apiKey: <YOUR_GOOGLE_CLOUD_API_KEY>
    ```
  </Tab>

  <Tab title="JSON (Deprecated)">
    ```json title="config.json" theme={null}
    {
      "models": [
        {
          "title": "<MODEL_NAME>",
          "provider": "vertexai",
          "model": "<MODEL_ID>",
          "apiKey": "<YOUR_GOOGLE_CLOUD_API_KEY>",
        }
      ]
    }
    ```
  </Tab>
</Tabs>