Grok Imagine Video 1.5 API

Overview

Grok Imagine Video 1.5 animates reference images into short videos using a text prompt. Use this page when you already have one or more source images and want prompt-guided motion, camera movement, or scene changes.

Capability	Value
Model ID	`grok-imagine-video-1-5`
Mode	`image-to-video`
Prompt length	1-5000 characters
Reference images	1-7 public image URLs
Duration	Integer or integer string from `1` through `15` seconds
Resolutions	`480p`, `720p`, `1080p`
Aspect ratios	`auto`, `1:1`, `16:9`, `9:16`, `3:2`, `2:3`
Output	MP4 video URL array in `resultJson.resultUrls`

Endpoint and authentication

Base URL:

https://api.apixo.ai/api/v1

Method	Endpoint	Purpose
`POST`	`/generateTask/grok-imagine-video-1-5`	Submit a video generation task
`GET`	`/statusTask/grok-imagine-video-1-5?taskId={taskId}`	Poll task status and retrieve results

All requests require your APIXO API key:

Authorization: Bearer YOUR_API_KEY

Submit requests also require:

Content-Type: application/json

Copy-paste async quickstart

This minimal request submits an image-to-video task and returns a taskId.

curl -X POST "https://api.apixo.ai/api/v1/generateTask/grok-imagine-video-1-5" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "prompt": "turn this product photo into a smooth rotating studio shot",
      "image_urls": [
        "https://example.com/product.png"
      ],
      "resolution": "480p",
      "duration": 5
    }
  }'

Successful response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678"
  }
}

Save the taskId; you need it to poll for the final result.

Poll for result

curl -X GET "https://api.apixo.ai/api/v1/statusTask/grok-imagine-video-1-5?taskId=task_12345678" \
  -H "Authorization: Bearer YOUR_API_KEY"

Processing response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "processing",
    "createTime": 1767965610929
  }
}

Success response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "success",
    "resultJson": "{\"resultUrls\":[\"https://file.apixo.ai/video.mp4\"]}",
    "createTime": 1767965610929,
    "completeTime": 1767965652317,
    "costTime": 41388
  }
}

Failed response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "CONTENT_VIOLATION",
    "failMsg": "Content does not meet safety guidelines",
    "createTime": 1767965610929,
    "completeTime": 1767965652317,
    "costTime": 41388
  }
}

Parse resultJson after state becomes success:

const payload = JSON.parse(data.resultJson);
const videoUrls = payload.resultUrls;

Request body

Image-to-video

{
  "request_type": "async",
  "input": {
    "mode": "image-to-video",
    "prompt": "make this portrait move with a subtle cinematic camera push",
    "image_urls": [
      "https://example.com/ref.jpg"
    ],
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": "8"
  }
}

The mode field is optional on this endpoint. If omitted, APIXO uses image-to-video.

Parameters

string

default:"async"

Result delivery mode. Omit this field or use async for polling with statusTask, or use callback for webhook delivery.

string

Required when request_type is callback. Must be a public HTTPS URL that can receive the final task payload. See Webhooks.

object

required

Grok Imagine Video 1.5 input parameters.

Show properties

string

default:"image-to-video"

Optional generation mode. This endpoint supports image-to-video only.

string

required

Text prompt describing the desired motion, camera movement, and scene changes. Supports 1-5000 characters. Empty prompts are rejected.

string[]

required

Source image URLs. Provide 1-7 public, directly accessible image URLs. Empty strings and non-string array items are rejected.

string

required

Output resolution tier. Supported values: 480p, 720p, 1080p. Values are trimmed and normalized to lowercase.

integer|string

required

Output duration in seconds. Accepts a JSON integer or integer string from 1 through 15. Decimal values and negative values are not valid.

string

default:"auto"

Output aspect ratio. Supported values: auto, 1:1, 16:9, 9:16, 3:2, 2:3. Values are trimmed and normalized to lowercase when possible.

Use public, directly accessible image URLs. Choose clear source images with the subject visible and little obstruction for more predictable motion.

Response format

Submit task response

POST /generateTask/grok-imagine-video-1-5 returns a task ID when the task is accepted:

integer

API status code. 200 means the task was accepted.

string

Human-readable status message.

string

Unique task identifier used with the status endpoint.

Status response fields

string

Unique task identifier.

string

Current task state: processing, success, or failed.

string

JSON string containing generated video URLs in resultUrls. Present when state is success.

string

Machine-readable failure code. Present when state is failed.

string

Human-readable failure message. Present when state is failed.

integer

Task creation timestamp in Unix milliseconds.

integer

Task completion timestamp in Unix milliseconds. Present after completion.

integer

Processing duration in milliseconds when available.

Webhook callback mode

Use callback mode when your backend should receive the final result automatically instead of polling.

curl -X POST "https://api.apixo.ai/api/v1/generateTask/grok-imagine-video-1-5" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "callback",
    "callback_url": "https://your-server.com/webhooks/apixo",
    "input": {
      "prompt": "make this character smile and look toward the camera",
      "image_urls": [
        "https://example.com/character.jpg"
      ],
      "resolution": "720p",
      "duration": 10
    }
  }'

The callback payload uses the same top-level shape as status polling with code, message, and data. Successful callbacks include the final state and resultJson. See Webhooks for delivery requirements and retry behavior.

Billing

Grok Imagine Video 1.5 is billed per second. The selected resolution determines the per-second unit price, and the submitted duration determines the billable seconds.

Resolution	APIXO price	Minimum valid request cost
`480p`	`$0.02 / second`	`$0.02` for 1 second
`720p`	`$0.035 / second`	`$0.035` for 1 second
`1080p`	`$0.048 / second`	`$0.048` for 1 second

Formula:

total cost = duration * resolution unit price

For current route and market comparison pricing, see Pricing.

Latency and polling

Grok Imagine Video 1.5 tasks are asynchronous. Actual latency may vary by prompt complexity, source image accessibility, duration, resolution, route queue load, and provider-side processing time.

Workload	Typical generation time	Recommended first poll	Poll interval
Image-to-video, 1-15 seconds	Varies by prompt, image count, resolution, and duration	30s after task creation	5s

For production workloads, use callback mode to avoid frequent polling while video tasks run.

Result URLs are temporary. Download and store important outputs promptly after task completion. Rate limits and concurrency can vary by account, API key, and route. If you receive 429, slow down requests and retry with backoff. For account-level details, see System APIs.

Errors and troubleshooting

HTTP errors

Code	Meaning	What to do
`400`	Invalid request body, missing `input`, unsupported `mode`, missing `prompt`, missing `image_urls`, invalid `resolution`, invalid `duration`, or invalid media array	Fix the request before retrying
`401`	Missing or invalid API key	Check the `Authorization` header
`402`	Insufficient balance or quota	Add balance or switch account/key
`403`	Key or route cannot access the model	Check permissions and route strategy
`404`	Task not found when polling	Check the `taskId`
`429`	Rate limit or concurrency limit reached	Retry with exponential backoff
`500`	Server error or unknown task failure	Retry with backoff
`502`	Upstream error	Retry with backoff
`504`	Upstream timeout	Retry later or use callback mode for long-running jobs

Validation notes

Condition	Backend behavior
Missing `input`	Request fails before task creation.
Missing `mode`	APIXO uses `image-to-video`.
Unsupported `mode`	Request fails before task creation. This endpoint only supports `image-to-video`.
Missing `prompt`	Request fails before task creation.
Empty `prompt` or more than 5000 characters	Request fails before task creation.
Missing `image_urls`	Request fails before task creation.
`image_urls` is not an array, contains empty strings, or contains non-string items	Request fails before task creation.
More than 7 `image_urls`	Request fails before task creation.
Missing `resolution`	Request fails before task creation.
Unsupported `resolution`	Request fails before task creation. Supported values are `480p`, `720p`, and `1080p`.
Missing `duration`	Request fails before task creation.
`duration` outside `1` through `15`, decimal, or negative	Request fails before task creation.
Missing `aspect_ratio`	Defaults to `auto`.
Unsupported `aspect_ratio`	Request fails before task creation. Use `auto`, `1:1`, `16:9`, `9:16`, `3:2`, or `2:3`.

Task failure codes

failCode is generated from APIXO’s mapped provider error. Common values include:

Fail code	Meaning	What to do
`SensitiveContent`	Prompt or input/output content was rejected by safety checks	Change the prompt or reference image
`PromptInvalid`	Prompt was invalid or rejected by the provider	Rewrite the prompt and retry
`ImageFormatIncorrect`	Reference image format could not be processed	Use a public, direct image URL in a common image format
`RateLimited`	Provider-side rate limit was reached	Retry with exponential backoff
`Timeout`	Provider-side timeout	Retry later or use callback mode
`Unknown error`	The provider returned an unmapped failure	Retry with backoff or contact support with the `taskId`

See Error Codes for the full error reference.

​Overview

​Endpoint and authentication

​Copy-paste async quickstart

​Poll for result

​Request body

​Image-to-video

​Parameters

​Response format

​Submit task response

​Status response fields

​Webhook callback mode

​Billing

​Latency and polling

​Errors and troubleshooting

​HTTP errors

​Validation notes

​Task failure codes

​Related links

Overview

Endpoint and authentication

Copy-paste async quickstart

Poll for result

Request body

Image-to-video

Parameters

Response format

Submit task response

Status response fields

Webhook callback mode

Billing

Latency and polling

Errors and troubleshooting

HTTP errors

Validation notes

Task failure codes

Related links