---
title: Grok Imagine Video 1.5 Preview | Runware Docs
url: https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview
description: Higher-tier Grok image-to-video generation from a single starting frame with longer durations and stronger output quality
---
# Grok Imagine Video 1.5 Preview

Grok Imagine Video 1.5 Preview is xAI's newer preview image-to-video model. It is positioned above the earlier Grok Imagine Video release with higher per-second pricing, supports durations up to 15 seconds, and generates 480p or 720p video from a single still-image starting frame for cinematic clips, animated visuals, and prompt-guided short-form video creation.

- **ID**: `xai:grok-imagine@video-1.5-preview`
- **Status**: api-only
- **Creator**: xAI
- **Release Date**: May 30, 2026
- **Capabilities**: Image to Video

## Pricing

Pricing starts at $0.08 per second of output at 480p and $0.14 per second of output at 720p. Reference image for I2V costs $0.01 per image on top.

- **480p . 1s**: `$0.09`
- **720p . 1s**: `$0.15`

## Compatibility & Validation

`resolution` cannot be used with `width/height`.

---

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

---

The following dimension combinations are supported:

| Configuration | Dimensions |
| --- | --- |
| `480p (1:1)` | `480x480` |
| `480p (16:9)` | `848x480` |
| `480p (9:16)` | `480x848` |
| `480p (4:3)` | `640x480` |
| `480p (3:4)` | `480x640` |
| `480p (3:2)` | `720x480` |
| `480p (2:3)` | `480x720` |
| `720p (1:1)` | `720x720` |
| `720p (16:9)` | `1280x720` |
| `720p (9:16)` | `720x1280` |
| `720p (4:3)` | `960x720` |
| `720p (3:4)` | `720x960` |

## Request Parameters

**API Options**

Platform-level options for task execution and delivery.

### [taskType](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-tasktype)

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

Identifier for the type of task being performed

### [taskUUID](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#request-outputtype)

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

Video output type.

**Allowed values**: `URL`

### [outputFormat](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#request-safety)

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

Content safety checking configuration for video generation.

#### [checkContent](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#request-includecost)

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

Include task cost in the response.

### [numberResults](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#request-inputs-frameimages)

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

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/xai-grok-imagine-video-1-5-preview#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/xai-grok-imagine-video-1-5-preview#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).

**Core Parameters**

Primary parameters that define the task output.

### [model](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-model)

- **Type**: `string`
- **Required**: true
- **Value**: `xai:grok-imagine@video-1.5-preview`

Identifier of the model to use for generation.

### [positivePrompt](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-positiveprompt)

- **Type**: `string`
- **Required**: true
- **Min**: `1`

Text prompt describing elements to include in the generated output.

### [width](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-width)

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

Width of the generated media in pixels.

### [height](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-height)

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

Height of the generated media in pixels.

### [resolution](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-resolution)

- **Type**: `string`
- **Default**: `480p`

Resolution preset for the output. When used with input media, automatically matches the aspect ratio from the input.

**Allowed values**: `480p` `720p`

### [duration](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#request-duration)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `15`
- **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).

## Response Parameters

### [taskType](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-tasktype)

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

Type of the task.

### [taskUUID](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-taskuuid)

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

UUID of the task.

### [videoUUID](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-videouuid)

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

UUID of the output video.

### [videoURL](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-videourl)

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

URL of the output video.

### [videoBase64Data](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-videobase64data)

- **Type**: `string`

Base64-encoded video data.

### [videoDataURI](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-videodatauri)

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

Data URI of the output video.

### [seed](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-seed)

- **Type**: `integer`

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

### [NSFWContent](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-nsfwcontent)

- **Type**: `boolean`

Flag indicating if NSFW content was detected.

### [cost](https://runware.ai/docs/models/xai-grok-imagine-video-1-5-preview#response-cost)

- **Type**: `float`

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

## Examples

### Amber Mantis Specimen Chamber (Image to Video)

[Watch video](https://assets.runware.ai/examples/xai-grok-imagine-video-1-5-preview/647d1c7c-eaf2-46e7-ac5d-fa0dccdcde8e.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "0fd38cc8-3a86-4900-9b8b-e6e514371fac",
  "model": "xai:grok-imagine@video-1.5-preview",
  "positivePrompt": "Animate the initial still into a refined macro science-film shot: the amber mantis slowly flexes its forelegs and turns its faceted head by a few degrees, inner inclusions refracting pale blue UV light. The camera glides forward with gentle parallax across catalog tags and stainless pins, focus breathing from the nearest claw to the eyes, dust particles drifting through the light beams. Keep the sealed specimen chamber stable, realistic, and highly detailed, with subtle reflections and no sudden cuts.",
  "width": 1280,
  "height": 720,
  "duration": 12,
  "inputs": {
    "frameImages": [
      "https://assets.runware.ai/assets/inputs/52f9653c-3009-4c54-88e8-5e641449b228.jpg"
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "0fd38cc8-3a86-4900-9b8b-e6e514371fac",
  "videoUUID": "4343d7b8-e25c-4f7f-8555-3a0db013c970",
  "videoURL": "https://vm.runware.ai/video/os/a06dlim3/ws/5/vi/4343d7b8-e25c-4f7f-8555-3a0db013c970.mp4",
  "cost": 1.69
}
```

---

### Celestial Origami Rail Passage (Image to Video)

[Watch video](https://assets.runware.ai/examples/xai-grok-imagine-video-1-5-preview/f9a79214-77b7-4fbf-95f9-1ac117a84aa9.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "77409a0c-cd76-45b7-a139-6b4f2ab9041c",
  "model": "xai:grok-imagine@video-1.5-preview",
  "positivePrompt": "Transform the still frame into a 12-second cinematic shot: slow forward camera glide beside the paper train as it crosses the trestle, subtle folds fluttering along the carriages, warm dawn rays shifting across the ravine, koi-shaped clouds drifting in graceful spirals, sparks flickering from the wheels, pine ridges separating with deep parallax, smooth natural motion, elegant surreal adventure tone, no cuts",
  "width": 1280,
  "height": 720,
  "duration": 12,
  "inputs": {
    "frameImages": [
      "https://assets.runware.ai/assets/inputs/f0eb5a7f-4fe8-4cd3-9aef-322b55e44904.jpg"
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "77409a0c-cd76-45b7-a139-6b4f2ab9041c",
  "videoUUID": "08dd6016-2df0-47e1-bd38-137007ec6e55",
  "videoURL": "https://vm.runware.ai/video/os/a01d21/ws/5/vi/08dd6016-2df0-47e1-bd38-137007ec6e55.mp4",
  "cost": 1.69
}
```

---

### Origami Whale Railway Concourse (Image to Video)

[Watch video](https://assets.runware.ai/examples/xai-grok-imagine-video-1-5-preview/8d1cd9b2-cc56-4ce3-a9de-f0773afca921.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "c8c4708c-1a17-46b8-8e40-b6037ab38058",
  "model": "xai:grok-imagine@video-1.5-preview",
  "positivePrompt": "Cinematic 15-second image-to-video from the supplied first frame: the monumental white origami whale begins to glide through the sunlit railway concourse as if buoyant in air, paper seams gently flexing and catching golden light. Folded paper birds swirl upward in coordinated spirals, travelers below shift their gaze and step back with subtle awe, dust motes drift through bright beams, reflections slide across the polished stone floor. Slow forward dolly with slight upward tilt, natural parallax, elegant motion, crisp paper texture, warm nostalgic color grade, realistic depth of field, smooth filmic pacing.",
  "width": 1280,
  "height": 720,
  "duration": 15,
  "inputs": {
    "frameImages": [
      {
        "image": "https://assets.runware.ai/assets/inputs/6381a52e-4bd7-4137-ac58-24047a4687b3.jpg",
        "frame": "first"
      }
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "c8c4708c-1a17-46b8-8e40-b6037ab38058",
  "videoUUID": "b6f6b064-9b88-4d26-91ee-a46aeef4a864",
  "videoURL": "https://vm.runware.ai/video/os/a01d21/ws/5/vi/b6f6b064-9b88-4d26-91ee-a46aeef4a864.mp4",
  "cost": 2.11
}
```

---

### Chromatic Icebound Fox Automaton (Image to Video)

[Watch video](https://assets.runware.ai/examples/xai-grok-imagine-video-1-5-preview/4cc67111-113b-4938-a340-f721cf717796.mp4)

**Request**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "fd7df16d-5e56-495c-9649-5c15a6152f00",
  "model": "xai:grok-imagine@video-1.5-preview",
  "positivePrompt": "Animate the giant enamel-and-brass fox automaton from the first frame as it slowly lifts one paw and steps forward across the reflective ice. Its segmented tail plates articulate in a smooth wave, small gears turning under translucent enamel panels. Tiny expedition figures look up and scatter gently for scale. Frost crystals drift past the lens, aurora ribbons ripple subtly across the sky, and reflections stretch across the frozen surface. Cinematic slow dolly-in with slight left-to-right parallax, stable composition, realistic physics, refined mechanical motion, epic polar atmosphere.",
  "width": 1280,
  "height": 720,
  "duration": 10,
  "inputs": {
    "frameImages": [
      {
        "image": "https://assets.runware.ai/assets/inputs/532417f3-a7df-44af-8141-87fcdf8195a0.jpg",
        "frame": "first"
      }
    ]
  }
}
```

**Response**:

```json
{
  "taskType": "videoInference",
  "taskUUID": "fd7df16d-5e56-495c-9649-5c15a6152f00",
  "videoUUID": "bbadc0ff-6541-4938-91e7-abc1cf225f32",
  "videoURL": "https://vm.runware.ai/video/os/a01d21/ws/5/vi/bbadc0ff-6541-4938-91e7-abc1cf225f32.mp4",
  "cost": 1.41
}
```