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

# LTX 2.3

> Generate a video with Lightricks LTX 2.3 from text, from an image, or synced to an audio track (2–20 s). Up to 20 s, 1080p, with audio.

Model id `ltx-2.3` · Lightricks · video · 3 modes: `text-to-video`, `image-to-video`, `audio-to-video`.

> [!NOTE]
>
> This page reflects the current catalog. Inputs, allowed values, limits and prices can change as the model evolves; the field names and their meaning do not. For the exact schema at any time, your agent calls [`get_model`](https://docs.argil.ai/v2/mcp/tools) with the mode.

## Text To Video

Mode `text-to-video`. Text to video. Enabled on request.

### Input

| Field | Type | Required | Allowed | Default | Description |
| - | - | - | - | - | - |
| `prompt` | string | Yes | up to 5,000 characters | | What the video should show: subject, action, camera and style. |
| `duration` | integer | | `6`, `8`, `10`, `12`, `14`, `16`, `18`, `20` | | Video duration in seconds: 6, 8, 10, 12, 14, 16, 18 or 20. Defaults to 6. |
| `aspect_ratio` | string | | `16:9`, `9:16` | | Aspect ratio: 16:9 (default) or 9:16. |

### Pricing

2.90 credits per second (1080p, with audio).

Fixed price: charged as estimated.

For the exact price of a request, use [`estimate_generation`](https://docs.argil.ai/v2/mcp/tools).

### Example

The arguments of [`generate_media`](https://docs.argil.ai/v2/mcp/tools#generate_media):

```json theme={null}
{
  "model": "ltx-2.3",
  "mode": "text-to-video",
  "input": {
    "prompt": "A ginger cat walks into a sunlit kitchen, handheld camera",
    "duration": 6,
    "aspect_ratio": "16:9"
  }
}
```

## Image To Video

Mode `image-to-video`. Animate an image. Enabled on request.

### Input

| Field | Type | Required | Allowed | Default | Description |
| - | - | - | - | - | - |
| `prompt` | string | Yes | up to 5,000 characters | | What the video should show: subject, action, camera and style. |
| `duration` | integer | | `6`, `8`, `10`, `12`, `14`, `16`, `18`, `20` | | Video duration in seconds: 6, 8, 10, 12, 14, 16, 18 or 20. Defaults to 6. |
| `aspect_ratio` | string | | `auto`, `16:9`, `9:16` | | Aspect ratio: auto (default, follows the image), 16:9 or 9:16. |
| `first_frame` | [File](https://docs.argil.ai/v2/mcp/how-it-works.md#your-files) | Yes | | | The image to animate, as the first frame. |

### Pricing

2.90 credits per second (1080p, with audio).

Fixed price: charged as estimated.

For the exact price of a request, use [`estimate_generation`](https://docs.argil.ai/v2/mcp/tools).

### Example

The arguments of [`generate_media`](https://docs.argil.ai/v2/mcp/tools#generate_media):

```json theme={null}
{
  "model": "ltx-2.3",
  "mode": "image-to-video",
  "input": {
    "prompt": "A ginger cat walks into a sunlit kitchen, handheld camera",
    "duration": 6,
    "aspect_ratio": "16:9",
    "first_frame": "asset_91a3c7e5b2d84f6a8e0c1b9d7f3a5e24"
  }
}
```

## Audio To Video

Mode `audio-to-video`. A video synced to an audio track, as long as the audio. Enabled on request.

### Input

| Field | Type | Required | Allowed | Default | Description |
| - | - | - | - | - | - |
| `prompt` | string | | up to 5,000 characters | | How the video should look; it follows the audio. |
| `first_frame` | [File](https://docs.argil.ai/v2/mcp/how-it-works.md#your-files) | | | | Optional image to use as the first frame. |
| `reference_audio` | [File](https://docs.argil.ai/v2/mcp/how-it-works.md#your-files) | Yes | | | The audio driving the video, 2–20 s; the video matches it. |

### Pricing

4.84 credits per second of input audio (the video matches its length; 10s assumed when unknown).

Fixed price: charged as estimated.

For the exact price of a request, use [`estimate_generation`](https://docs.argil.ai/v2/mcp/tools).

### Example

The arguments of [`generate_media`](https://docs.argil.ai/v2/mcp/tools#generate_media):

```json theme={null}
{
  "model": "ltx-2.3",
  "mode": "audio-to-video",
  "input": {
    "reference_audio": "asset_91a3c7e5b2d84f6a8e0c1b9d7f3a5e24"
  }
}
```


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