---
title: LTX-2 Pro | Runware Docs
url: https://runware.ai/docs/models/lightricks-ltx-2-pro
description: Cinematic LTX-2 Pro text and image to video generator
---
# LTX-2 Pro

LTX-2 Pro is a cinematic video model by Lightricks. It supports text prompts and image inputs. It outputs high resolution clips with realistic motion and precise lighting. It targets professional workflows that need stable pacing, detailed subjects, and synchronized audio.

- **ID**: `lightricks:2@0`
- **Status**: live
- **Creator**: Lightricks
- **Release Date**: October 1, 2025
- **Capabilities**: Text to Video, Image to Video, Audio to Video

## Pricing

- **1080p · 6s**: `$0.36`
- **4K · 10s**: `$2.40`

## Compatibility & Validation

`width` and `height` must be used together.

---

The following dimension combinations are supported:

| Configuration | Dimensions |
| --- | --- |
| `1080p (16:9)` | `1920x1080` |
| `1440p (16:9)` | `2560x1440` |
| `4K (16:9)` | `3840x2160` |

## Request Parameters

**API Options**

Platform-level options for task execution and delivery.

### [taskType](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `videoInference`

Identifier for the type of task being performed

### [taskUUID](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

### [outputType](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-outputtype)

- **Type**: `string`
- **Default**: `URL`

Video output type.

**Allowed values**: `URL`

### [outputFormat](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-outputformat)

- **Type**: `string`
- **Default**: `MP4`

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

- \`MP4\`: Widely supported video container (H.264), recommended for general use.
- \`WEBM\`: Optimized for web delivery.
- \`MOV\`: QuickTime format, common in professional workflows (Apple ecosystem).

**Allowed values**: `MP4` `WEBM` `MOV`

### [outputQuality](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-outputquality)

- **Type**: `integer`
- **Min**: `20`
- **Max**: `99`
- **Default**: `95`

Compression quality of the output. Higher values preserve quality but increase file size.

### [webhookURL](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-webhookurl)

- **Type**: `string`
- **Format**: `URI`

Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

**Learn more** (1 resource):

- [Webhooks](https://runware.ai/docs/platform/webhooks) (platform)

### [deliveryMethod](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-deliverymethod)

- **Type**: `string`
- **Default**: `async`

Determines how the API delivers task results.

**Allowed values**:

- `async` Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. Required for long-running tasks like video generation.

**Learn more** (1 resource):

- [Task Polling](https://runware.ai/docs/platform/task-polling) (platform)

### [uploadEndpoint](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-uploadendpoint)

- **Type**: `string`
- **Format**: `URI`

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

**Common use cases:**

- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- **CDN integration**: Upload to content delivery networks for immediate distribution.

```text
// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg
```

The content data will be sent as the request body to the specified URL when generation is complete.

### [safety](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-safety)

- **Path**: `safety.checkContent`
- **Type**: `object (2 properties)`

Content safety checking configuration for video generation.

#### [checkContent](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-safety-checkcontent)

- **Path**: `safety.checkContent`
- **Type**: `boolean`
- **Default**: `false`

Enable or disable content safety checking. When enabled, defaults to `fast` mode.

#### [mode](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-safety-mode)

- **Path**: `safety.mode`
- **Type**: `string`
- **Default**: `none`

Safety checking mode for video generation.

**Allowed values**:

- `none` Disables checking.
- `fast` Checks key frames.
- `full` Checks all frames.

### [ttl](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-ttl)

- **Type**: `integer`
- **Min**: `60`

Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.

### [includeCost](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-includecost)

- **Type**: `boolean`
- **Default**: `false`

Include task cost in the response.

### [numberResults](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-numberresults)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `4`
- **Default**: `1`

Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

**Inputs**

Input resources for the task (images, audio, etc). These must be nested inside the \`inputs\` object.

### [frameImages](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-inputs-frameimages)

- **Path**: `inputs.frameImages`
- **Type**: `array of strings or objects`

An array of frame-specific image inputs to guide video generation. Each item can be either a plain image input (UUID, URL, Data URI, or Base64) or an object that pairs an image with a target frame position.

The `frameImages` parameter allows you to constrain specific frames within the video sequence, ensuring that particular visual content appears at designated points. This is different from `referenceImages`, which provide overall visual guidance without constraining specific timeline positions.

When the `frame` parameter is omitted, automatic distribution rules apply:

- **1 image**: Used as the first frame.

**Examples**:

**Shorthand format:** When you don't need to specify a frame position, you can pass a plain image input directly.

```json
"frameImages": [
  "aac49721-1964-481a-ae78-8a4e29b91402"
]
```

**Object format:** When you need to specify a frame position, use an object with `image` and `frame`.

```json
"frameImages": [
  {
    "image": "aac49721-1964-481a-ae78-8a4e29b91402",
    "frame": "first"
  }
]
```

**Format 1: string[]**:

- **Type**: `string`

Image input (UUID, URL, Data URI, or Base64).

**Format 2: object[]**:

#### [image](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-inputs-frameimages-format-2-image)

- **Path**: `inputs.frameImages.image`
- **Type**: `string`
- **Required**: true

Image input (UUID, URL, Data URI, or Base64).

#### [frame](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-inputs-frameimages-format-2-frame)

- **Path**: `inputs.frameImages.frame`
- **Type**: `object`

Target frame position for the image. This model only supports the first frame.

**Allowed values**:

- `first` First frame of the video.
- `0` Frame index 0 (first frame).

**Generation Parameters**

Core parameters for controlling the generated content.

### [model](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-model)

- **Type**: `string`
- **Required**: true
- **Value**: `lightricks:2@0`

Identifier of the model to use for generation.

**Learn more** (3 resources):

- [Text To Image: Model Selection The Foundation Of Generation](https://runware.ai/docs/guides/text-to-image#model-selection-the-foundation-of-generation) (guide)
- [Image Inpainting: Model Specialized Inpainting Models](https://runware.ai/docs/guides/image-inpainting#model-specialized-inpainting-models) (guide)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/guides/image-outpainting#other-critical-parameters) (guide)

### [positivePrompt](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-positiveprompt)

- **Type**: `string`
- **Required**: true
- **Min**: `2`
- **Max**: `10000`

Text prompt describing elements to include in the generated output.

**Learn more** (2 resources):

- [Text To Image: Prompts Guiding The Generation](https://runware.ai/docs/guides/text-to-image#prompts-guiding-the-generation) (guide)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/guides/image-outpainting#other-critical-parameters) (guide)

### [width](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-width)

- **Type**: `integer`
- **Paired with**: height

Width of the generated media in pixels.

**Learn more** (2 resources):

- [Image To Image: Dimensions Changing Aspect Ratio](https://runware.ai/docs/guides/image-to-image#dimensions-changing-aspect-ratio) (guide)
- [Image Outpainting: Dimensions Critical For Outpainting](https://runware.ai/docs/guides/image-outpainting#dimensions-critical-for-outpainting) (guide)

### [height](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-height)

- **Type**: `integer`
- **Paired with**: width

Height of the generated media in pixels.

**Learn more** (2 resources):

- [Image To Image: Dimensions Changing Aspect Ratio](https://runware.ai/docs/guides/image-to-image#dimensions-changing-aspect-ratio) (guide)
- [Image Outpainting: Dimensions Critical For Outpainting](https://runware.ai/docs/guides/image-outpainting#dimensions-critical-for-outpainting) (guide)

### [duration](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-duration)

- **Type**: `float`
- **Default**: `6`

Length of the generated video in seconds. The total number of frames produced is determined by duration multiplied by the model's frame rate (fps).

**Allowed values**: `6` `8` `10`

### [fps](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-fps)

- **Type**: `integer`
- **Default**: `25`

Frames per second for video generation. Higher values create smoother motion but require more processing time.

**Allowed values**: `25` `50`

**Provider Settings**

Parameters specific to this model provider. These must be nested inside the \`providerSettings.lightricks\` object.

### [generateAudio](https://runware.ai/docs/models/lightricks-ltx-2-pro#request-providersettings-lightricks-generateaudio)

- **Path**: `providerSettings.lightricks.generateAudio`
- **Type**: `boolean`
- **Default**: `false`

Generate synchronized audio.

## Response Parameters

### [taskType](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `videoInference`

Type of the task.

### [taskUUID](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the task.

### [videoUUID](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-videouuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the output video.

### [videoURL](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-videourl)

- **Type**: `string`
- **Format**: `URI`

URL of the output video.

### [videoBase64Data](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-videobase64data)

- **Type**: `string`

Base64-encoded video data.

### [videoDataURI](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-videodatauri)

- **Type**: `string`
- **Format**: `URI`

Data URI of the output video.

### [seed](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-seed)

- **Type**: `integer`

The seed used for generation. If none was provided, shows the randomly generated seed.

### [NSFWContent](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-nsfwcontent)

- **Type**: `boolean`

Flag indicating if NSFW content was detected.

### [cost](https://runware.ai/docs/models/lightricks-ltx-2-pro#response-cost)

- **Type**: `float`

Task cost in USD. Present when `includeCost` is set to `true` in the request.

## Examples

### Rain-Slick Neon Alleyway Portrait (Image to Video)

[Watch video](https://assets.runware.ai/examples/lightricks-ltx-2-pro/b222144d-41fe-4d04-9ea6-45361393437d.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "e8147fa8-025b-45f4-a1c3-55020aa1442d",
  "model": "lightricks:2@0",
  "positivePrompt": "Using the provided first frame as the exact opening composition, create a cinematic rainy-night sequence in a futuristic alley. The camera begins close on the musician beneath a transparent umbrella, then performs a slow subtle dolly with gentle handheld realism. Raindrops ripple in puddles, steam curls from street vents, neon reflections shimmer across the pavement, and holographic signs flicker softly in magenta and teal. The subject remains consistent and photorealistic, with natural micro-movements in posture, blinking, breath, and coat fabric reacting to the damp breeze. A few pedestrians pass as soft silhouettes in the deep background, preserving focus on the main figure. Emphasize precise lighting, stable pacing, realistic wet-surface physics, rich atmospheric depth, and premium filmic contrast. Generate synchronized ambient city audio with rain, distant traffic hum, soft electrical buzz, and faint footsteps.",
  "width": 1920,
  "height": 1080,
  "duration": 8,
  "fps": 25,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  },
  "inputs": {
    "frameImages": [
      {
        "image": "https://assets.runware.ai/assets/inputs/f4c0789f-eee2-407f-9145-110c82609f19.jpg",
        "frame": "first"
      }
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "e8147fa8-025b-45f4-a1c3-55020aa1442d",
  "videoUUID": "41761ba1-6292-4570-aef2-4ed3e7ce3bed",
  "videoURL": "https://vm.runware.ai/video/os/a21d05/ws/5/vi/41761ba1-6292-4570-aef2-4ed3e7ce3bed.mp4",
  "cost": 0.48
}
```

---

### Moonlit Monastery Cliffside Procession (Text to Video)

[Watch video](https://assets.runware.ai/examples/lightricks-ltx-2-pro/851dc2cb-a462-4d74-ae1b-1b130ad1b8b5.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "2804a65f-6622-4c53-aca4-bd631680ed53",
  "model": "lightricks:2@0",
  "positivePrompt": "A solemn torchlit procession of saffron-robed monks winding along a narrow cliffside path toward an ancient mountain monastery under a giant moon, sheer rock walls on one side and a mist-filled abyss on the other, banners fluttering in cold alpine wind, drifting incense smoke, warm firelight contrasting with silver moonlight, cinematic wide establishing shot that slowly glides forward and slightly upward, realistic fabric movement, precise footsteps, subtle faces illuminated by lantern glow, prayer wheels turning, distant waterfalls vanishing into fog, ultra-detailed stone carvings, volumetric night mist, polished professional cinematography, natural pacing, grounded realism, serene spiritual atmosphere, high dynamic range, synchronized ambient audio of wind, bells, footsteps on stone, soft chanting, and crackling torches",
  "width": 3840,
  "height": 2160,
  "duration": 8,
  "fps": 25,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "2804a65f-6622-4c53-aca4-bd631680ed53",
  "videoUUID": "20417af1-9d69-414b-ad89-424ddea60442",
  "videoURL": "https://vm.runware.ai/video/os/a23d05/ws/5/vi/20417af1-9d69-414b-ad89-424ddea60442.mp4",
  "cost": 1.92
}
```

---

### Moonlit Bioluminescent Cliff Shrine (Image to Video)

[Watch video](https://assets.runware.ai/examples/lightricks-ltx-2-pro/f666b344-9849-4f5d-9289-7abc21b8397d.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "81c6d9e9-60fd-40ed-b6a6-fffbd534d476",
  "model": "lightricks:2@0",
  "positivePrompt": "Using the provided first frame as the opening shot, create a cinematic night sequence of a secluded shrine on a rugged sea cliff. The camera begins with a slow forward drift and slight parallax around the lantern-bearing traveler, while moonlight catches the shrine roof, wet stone, and wind-tossed grasses. Bioluminescent flowers pulse softly in clusters, fog rolls along the cliff edge, and waves crash far below with occasional spray. Thin clouds slide across the moon, casting shifting silver light and delicate shadows. Preserve the composition and subject identity from the frame image while adding realistic environmental motion, subtle cloth movement, gentle lantern flicker, and polished filmic pacing. Naturalistic textures, high dynamic range, precise lighting, immersive ambience, premium cinematic realism.",
  "width": 1920,
  "height": 1080,
  "duration": 8,
  "fps": 25,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  },
  "inputs": {
    "frameImages": [
      {
        "image": "https://assets.runware.ai/assets/inputs/085e3f32-4bb6-445a-9e45-309f3d838ae6.jpg",
        "frame": "first"
      }
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "81c6d9e9-60fd-40ed-b6a6-fffbd534d476",
  "videoUUID": "32c216d2-8292-46ce-b520-c9a03aac5606",
  "videoURL": "https://vm.runware.ai/video/os/a15d18/ws/5/vi/32c216d2-8292-46ce-b520-c9a03aac5606.mp4",
  "cost": 0.48
}
```

---

### Stormlit Coastal Observatory Nightfall (Text to Video)

[Watch video](https://assets.runware.ai/examples/lightricks-ltx-2-pro/13c4d9f6-c654-4cb4-8bc8-84fb85127f67.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "6ebc0df3-e55c-4905-baef-7fa6407d6b6e",
  "model": "lightricks:2@0",
  "positivePrompt": "A cinematic ultra-detailed nighttime scene on a remote cliffside observatory above a turbulent sea, moments before a summer storm breaks. A lone glass-domed research station glows warm amber against deep cobalt sky, wet stone paths reflecting rotating beacon lights, wind-tossed grasses bending in gusts, distant waves crashing into black rocks below. The camera begins with a slow wide aerial drift toward the observatory, then gently lowers to reveal rain beginning to speckle the lens and windows, subtle lightning flickering inside dense storm clouds on the horizon. Realistic motion, natural pacing, precise reflections on wet surfaces, volumetric mist, layered cloud movement, believable ocean dynamics, tasteful cinematic contrast, atmospheric depth, premium live-action look, no text, no logos. Synchronized environmental audio: wind, low thunder, surf, faint metallic rattles from antenna equipment.",
  "width": 3840,
  "height": 2160,
  "duration": 8,
  "fps": 25,
  "providerSettings": {
    "lightricks": {
      "generateAudio": true
    }
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "6ebc0df3-e55c-4905-baef-7fa6407d6b6e",
  "videoUUID": "55c20e05-7c6d-415e-aea9-47ace761161d",
  "videoURL": "https://vm.runware.ai/video/os/a05d22/ws/5/vi/55c20e05-7c6d-415e-aea9-47ace761161d.mp4",
  "cost": 1.92
}
```