# AI21Labs Fields

- Package: [Aspire.Hosting.GitHub.Models](/reference/api/csharp/aspire.hosting.github.models.md)
- Type: [AI21Labs](/reference/api/csharp/aspire.hosting.github.models/ai21labs.md)
- Kind: `Fields`
- Members: `2`

Models published by AI21 Labs.

## AI21Jamba15Large

- Name: `AI21Jamba15Large`
- Modifiers: `static` `readonly`
- Returns: [GitHubModel](/reference/api/csharp/aspire.hosting.github.models/githubmodel.md)

A 398B parameters (94B active) multilingual model, offering a 256K long context window, function calling, structured output, and grounded generation.

```csharp
public static readonly GitHubModel AI21Jamba15Large
```

## AI21Jamba15Mini

> **Obsolete:** This model has been removed from GitHub Models.

- Name: `AI21Jamba15Mini`
- Modifiers: `static` `readonly`
- Returns: [GitHubModel](/reference/api/csharp/aspire.hosting.github.models/githubmodel.md)

A 52B parameters (12B active) multilingual model, offering a 256K long context window, function calling, structured output, and grounded generation.

```csharp
public static readonly GitHubModel AI21Jamba15Mini
```