Grok · Model API

Grok Imagine Video API

Grok Imagine Video 1.5 API with VezAPI. Explore model capabilities, credit pricing, request parameters, and integration examples.

Image to Video

Grok Imagine Video 1.5 API documentation

Integrate Grok Imagine Video 1.5 with your VezAPI key. The operations below share the same authentication and account balance.

Base URL: https://api.vezapi.com
Send Authorization: Bearer YOUR_VEZAPI_KEY. Use a unique Idempotency-Key for each submission; reuse it only when checking the same request.

Grok Imagine Video 1.5 Preview

POST/api/v1/jobs/createTask

Model IDs: grok-imagine-video-1-5-preview

Parameter	Type	Description & constraints
`model` required	`string`	The model name used for generation. This endpoint must use `grok-imagine-video-1-5-preview`. Values: `"grok-imagine-video-1-5-preview"` Default: `"grok-imagine-video-1-5-preview"`
`callBackUrl` optional	`string`	Optional callback URL for task completion notifications. If provided, the system will send a POST request to this URL when the task completes.
`input` required	`object`	Input parameters for the generation task.
`input.prompt` optional	`string`	Prompt for video generation. Maximum length: 4096 characters. Use `@imageN` in the prompt to reference an image from `image_urls`, where N is the 1-based index of the image. For example, `@image1` refers to the first image in the array. `maxLength: 4096`
`input.image_urls` required	`array`	Upload image files to be used as API input. Supported file types: image/jpeg, image/png, image/webp, image/jpg. Maximum file size: 20MB. Supports multi-file upload, up to 1 file.Only one is supported when the resolution is 1080p. `maxItems: 1`
`input.aspect_ratio` optional	`string`	Aspect ratio for video generation. Values: `"1:1", "16:9", "9:16", "4:3", "3:4", "3:2", "2:3", "auto"` Default: `"auto"`
`input.resolution` optional	`string`	Resolution for video generation. Values: `"480p", "720p", "1080p"` Default: `"480p"`
`input.duration` optional	`integer`	Video duration in seconds. Range: [1, 15]. Default: 8. Minimum: 1. Maximum: 15. Step: 1. Default: `8` `minimum: 1` `maximum: 15`
`input.first_frame_url` optional	`string`	First-frame image. Can be passed together with image_urls, or sent on its own.
`input.last_frame_url` optional	`string`	Last-frame image.
`input.loop_url` optional	`string`	Loop image used as both the start and end of the video. Cannot be sent together with a different first-frame or last-frame image.
`input.keyframes` optional	`array`	Mid-video keyframes, up to 4. Each item must include url and timestamp_s (in seconds). Each timestamp must be greater than 0 and less than duration, and any two keyframes must be at least 1/3 second apart. `maxItems: 4`
`input.keyframes[].url` required	`string`	image url.
`input.keyframes[].timestamp_s` required	`integer`	time stamp.
`input.enable_audio` optional	`boolean`	Whether to generate audio. Defaults to true.
`input.nsfw_checker` optional	`boolean`	Defaults to false. You can set it to false based on your needs. If set to false, our content filtering will be disabled, and all results will be returned directly by the model itself.

Request example

curl -X POST 'https://api.vezapi.com/api/v1/jobs/createTask' \
  -H 'Authorization: Bearer YOUR_VEZAPI_KEY' \
  -H 'Idempotency-Key: your-unique-request-id' \
  -H 'Content-Type: application/json' \
  -d '{
  "model": "grok-imagine-video-1-5-preview",
  "input": {
    "prompt": "Your prompt",
    "image_urls": [
      "https://example.com/input.png"
    ],
    "aspect_ratio": "auto",
    "resolution": "480p",
    "duration": 8
  }
}'

Responses and errors

HTTP 200

Request successful.

Parameter	Type	Description & constraints
`code` optional	`integer`	Status code of the request. The HTTP status is 200 even when the request fails, so always check this field: 200 means success; any other value means the request failed and msg describes the reason. Common values: 401 invalid or missing API key; 402 insufficient credits; 429 rate limit exceeded; 422 or 500 the request could not be processed (read msg and check your parameters before retrying). Values: `200, 401, 402, 404, 422, 429, 455, 500, 501, 505`
`msg` optional	`string`	Response message, error description when failed
`data` required	`object`
`data.taskId` optional	`string`	Task ID, can be used with Get Task Details endpoint to query task status
`data.recordId` optional	`string`	Record ID, can be used to get the record details

Task status and callbacks

For asynchronous tasks, keep the returned taskId. Query GET /api/v1/jobs/recordInfo?taskId=... or provide callBackUrl when creating the task. Only the account that created a task can access it or derive new resources from it.

A timeout can mean the submission was accepted. Inspect the existing request in your dashboard; do not create another task automatically. Callback delivery is retried and may arrive more than once. Deduplicate with X-VezAPI-Event-Id.

Files, logs and billing

Generated media normally follows a 14-day provider lifetime; uploaded files expire after 24 hours. Save the files you need before expiration. VezAPI streams registered files without keeping a permanent media library. Request logs are retained for two calendar months.

Credits are reserved before submission. Final deductions match actual discounted consumption one for one. Unknown usage pauses new paid requests. If available funds cannot cover final usage while protecting other reservations, settlement stays pending until funded; model usage cannot make the wallet negative. Time-based inputs require server-side metadata reads; a failed read prevents submission.

Open full documentation →

Send a request using your VezAPI key. Successful generations use your account credits.

VezAPI API Key

POST/api/v1/jobs/createTask

Request body

{
  "model": "grok-imagine-video-1-5-preview",
  "input": {
    "prompt": "Your prompt",
    "image_urls": [
      "https://example.com/input.png"
    ],
    "aspect_ratio": "auto",
    "resolution": "480p",
    "duration": 8
  }
}

Response

Your response will appear here.

Grok Imagine Video 1.5 API pricing

Rates below are reference estimates; final deductions equal actual discounted consumption, one for one. At the standard pack rate, 1,000 credits ≈ $10. Larger packs reduce the effective credit price.

Specification	Credits	Unit	USD reference
grok-imagine-video-1-5-preview, 1080p	8	per second	$0.08
grok-imagine-video-1-5-preview, 720p	4.5	per second	$0.045
grok-imagine-video-1-5-preview, 480p	2.4	per second	$0.024