# Model Config Structure (/docs/configuration/librechat_yaml/object_structure/model_config)

Each item under `models` is part of a list of records, either a boolean value or Object:

**When specifying a model as an object:**

An object allows for detailed configuration of the model, including its `deploymentName` and/or `version`. This mode is used for more granular control over the models, especially when working with multiple versions or deployments under one instance or resource group.

**Example**:
```yaml filename="endpoints / azureOpenAI / groups / {group_item} / models / {model_item=Object}"
models:
  gpt-4-vision-preview:
    deploymentName: "gpt-4-vision-preview"
    version: "2024-02-15-preview"
```

**Notes:**
- **Deployment Names** and **Versions** are critical for ensuring that the correct model is used.
    - Double-check these values for accuracy to prevent unexpected behavior.

### deploymentName

**Key:**
<OptionTable
  options={[
    ['deploymentName', 'String', 'The name of the deployment for the model. Identifies the deployment of the model within Azure.', 'This does not have to be the matching OpenAI model name as is convention, but must match the actual name of your deployment on Azure.'],
  ]}
/>

**Required:** yes

**Example:**
```yaml filename="endpoints / azureOpenAI / groups / {group_item} / models / {model_item=Object} / deploymentName"
deploymentName: "gpt-4-vision-preview"
```

## version

**Key:**
<OptionTable
  options={[
    ['version', 'String', 'Specifies the version of the model. Defines the version of the model to be used.', ''],
  ]}
/>

**Required:** yes

**Example:**
```yaml filename="endpoints / azureOpenAI / groups / {group_item} / models / {model_item=Object} / version"
version: "2024-02-15-preview"
```

**Enabling a Model with Default Group Configuration**

**Key:**
<OptionTable
  options={[
    ['models', 'Boolean', 'Enables a model with default group configuration.', 'When a model is enabled (`true`) without using an object, it uses the group\'s configuration values for deployment name and version.'],
  ]}
/>

**Example:**
```yaml filename="endpoints / azureOpenAI / groups / {group_item} / models"
models:
  gpt-4-turbo: true
```