# OpenAIModelResource Properties

- Package: [Aspire.Hosting.OpenAI](/reference/api/csharp/aspire.hosting.openai.md)
- Type: [OpenAIModelResource](/reference/api/csharp/aspire.hosting.openai/openaimodelresource.md)
- Kind: `Properties`
- Members: `3`

Represents an OpenAI Model resource.

## ConnectionStringExpression

- Name: `ConnectionStringExpression`
- Modifiers: `get`
- Returns: `ReferenceExpression`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/cbc352350f1a9bafbaff10d14a2c8de4ac186a48/src/Aspire.Hosting.OpenAI/OpenAIModelResource.cs#L43)

Gets the connection string expression for the OpenAI Model resource.

```csharp
public ReferenceExpression ConnectionStringExpression { get; }
```

## Model

- Name: `Model`
- Modifiers: `get; set`
- Returns: `string`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/cbc352350f1a9bafbaff10d14a2c8de4ac186a48/src/Aspire.Hosting.OpenAI/OpenAIModelResource.cs)

Gets or sets the model name, e.g., "gpt-4o-mini".

```csharp
public string Model { get; set; }
```

## Parent

- Name: `Parent`
- Modifiers: `get`
- Returns: [OpenAIResource](/reference/api/csharp/aspire.hosting.openai/openairesource.md)
- Source: [GitHub](https://github.com/microsoft/aspire/blob/cbc352350f1a9bafbaff10d14a2c8de4ac186a48/src/Aspire.Hosting.OpenAI/OpenAIModelResource.cs#L18)

Parent OpenAI account resource from which settings (like API key) can be shared.

```csharp
public OpenAIResource Parent { get; }
```