Grok Imagine Text to Video

This page is generated from the upstream official OpenAPI documentation. Endpoints, parameters and examples match the official docs; brand and API domain are replaced with ModelFold.

Endpoint

POST /jobs/createTask

Full URL: https://ai.modelfold.online/v1/jobs/createTask

Authentication: every request must include the Authorization: Bearer <API_KEY> header.

Output is an MP4 video with an audio track generated together with the video (dialogue written in the prompt is spoken). Audio cannot be turned off.

Query Task Status

After submitting a task, use the unified query endpoint to check progress and retrieve results:

• Get Task Details — Learn how to query task status and retrieve generation results

TIP

For production use, we recommend using the callBackUrl parameter to receive automatic notifications when generation completes, rather than polling the status endpoint

Related Resources

• Market Overview — Explore all available models
• Common API — Check credits and account usage

Request Parameters

Body (application/json)

Parameter	Type	Required	Description
model	string	Yes	The model name to use for generation. Required field. - Must be grok-imagine/text-to-video for this endpoint Default："grok-imagine/text-to-video"。 Allowed values：grok-imagine/text-to-video。 示例：grok-imagine/text-to-video。
callBackUrl	string	No	The URL to receive video generation task completion updates. Optional but recommended for production use. - System will POST task status and results to this URL when video generation completes - Callback includes generated video URLs and task information - Your callback endpoint should accept POST requests with JSON payload containing video results - Alternatively, use the Get Task Details endpoint to poll task status - To ensure callback security, see Webhook Verification Guide for signature verification implementation 示例：https://your-domain.com/api/callback。
input	object	Yes	Input parameters for the video generation task
input.prompt	string	Yes	Text prompt describing the desired video motion. Required field. - Should be detailed and specific about the desired visual motion - Describe movement, action sequences, camera work, and timing - Include details about subjects, environments, and motion dynamics - Maximum length: 5000 characters - Supports English language prompts 示例：A couple of doors open to the right one by one randomly and stay open, to show the inside, each is either a living room, or a kitchen, or a bedroom or an office, with little people living inside.。
input.aspect_ratio	string	No	Specifies the width-to-height ratio of the generated video. Controls the aspect ratio of the output. - 2:3: Portrait orientation (vertical) - 3:2: Landscape orientation (horizontal) - 1:1: Square format - 16:9: Wide screen format - 9:16: Tall screen format Default: 2:3 Default："2:3"。 Allowed values：2:3 / 3:2 / 1:1 / 16:9 / 9:16。 示例：2:3。
input.mode	string	No	Specifies the generation mode affecting the style and intensity of motion. - fun: More creative and playful interpretation - normal: Balanced approach with good motion quality - spicy: More dynamic and intense motion effects Default: normal Default："normal"。 Allowed values：fun / normal / spicy。 示例：normal。
input.duration	number	No	The duration of the generated video (in seconds) (6-30). (Minimum: 6, Maximum: 30, Step: 1)
input.resolution	string	No	The resolution of the generated video. Default："480p"。 Allowed values：480p / 720p / 1080p。 示例：480p。
input.nsfw_checker	boolean	No	Defaults to false. When false, no additional content filtering is applied and results are returned directly by the model.

Request Example

curl -X POST "https://ai.modelfold.online/v1/jobs/createTask" \
  -H "Authorization: Bearer $MODELFOLD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "grok-imagine/text-to-video",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "A couple of doors open to the right one by one randomly and stay open, to show the inside, each is either a living room, or a kitchen, or a bedroom or an office, with little people living inside.",
    "aspect_ratio": "2:3",
    "mode": "normal",
    "duration": "6",
    "resolution": "480p"
  }
}'

{
  "model": "grok-imagine/text-to-video",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "prompt": "A couple of doors open to the right one by one randomly and stay open, to show the inside, each is either a living room, or a kitchen, or a bedroom or an office, with little people living inside.",
    "aspect_ratio": "2:3",
    "mode": "normal",
    "duration": "6",
    "resolution": "480p"
  }
}

Response

200 — Request successful

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "281e5b0*********************f39b9"
  }
}

Callback

videoTaskCompleted

Callback URL: {request.body#/callBackUrl} (the callBackUrl in the request body).

The system sends this callback when the grok-imagine/text-to-video task succeeds or fails.

Callback body parameters

参数	类型	必填	说明
code	integer	是	Unified callback code: 200 for success, 501 for failure. Allowed values：200 / 501。 示例：200。
msg	string	是	Unified callback message. Allowed values：Playground task completed successfully. / Playground task failed.。 示例：Playground task completed successfully.。
data	object	是	—
data.taskId	string	是	The unique task identifier.
data.model	string	是	The model used for the task. Allowed values：grok-imagine/text-to-video。 示例：grok-imagine/text-to-video。
data.state	string	是	Terminal task state. Allowed values：success / fail。 示例：success。
data.param	string	是	JSON string containing the submitted task parameters.
data.resultJson	string	否	JSON string containing resultUrls, firstFrameUrl, lastFrameUrl, or resultObject when successful. Present only when state is success.
data.failCode	string	否	Failure code, a numeric string such as "400" or "500". Present only when state is fail.
data.failMsg	string	否	Failure reason. Present only when state is fail.
data.costTime	integer	否	Processing time in seconds. Present on both success and failure callbacks.
data.completeTime	integer	否	Task completion timestamp.
data.createTime	integer	否	Task creation timestamp.
data.updateTime	integer	否	Use completeTime as the completion time; updateTime may equal createTime.
data.creditsConsumed	number	否	Credits consumed by the task; 0 for failed tasks.

Task completed successfully

{
  "code": 200,
  "msg": "Playground task completed successfully.",
  "data": {
    "taskId": "task_example_video_webhook_001",
    "model": "grok-imagine/text-to-video",
    "state": "success",
    "param": "{\"input\":\"{\\\"prompt\\\":\\\"A couple of doors open to the right one by one randomly and stay open, to show the inside, each is either a living ro...\\\",\\\"aspect_ratio\\\":\\\"2:3\\\",\\\"mode\\\":\\\"normal\\\",\\\"duration\\\":\\\"6\\\",\\\"resolution\\\":\\\"480p\\\"}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"grok-imagine/text-to-video\"}",
    "resultJson": "{\"resultUrls\":[\"https://example.com/generated-video.mp4\"]}",
    "costTime": 12,
    "completeTime": 1234567890,
    "createTime": 1234560000,
    "updateTime": 1234567890,
    "creditsConsumed": 1.23
  }
}

Task failed

{
  "code": 501,
  "msg": "Playground task failed.",
  "data": {
    "taskId": "task_example_video_webhook_001",
    "model": "grok-imagine/text-to-video",
    "state": "fail",
    "param": "{\"input\":\"{\\\"prompt\\\":\\\"A couple of doors open to the right one by one randomly and stay open, to show the inside, each is either a living ro...\\\",\\\"aspect_ratio\\\":\\\"2:3\\\",\\\"mode\\\":\\\"normal\\\",\\\"duration\\\":\\\"6\\\",\\\"resolution\\\":\\\"480p\\\"}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"grok-imagine/text-to-video\"}",
    "failCode": "400",
    "failMsg": "<error detail>",
    "costTime": 12,
    "creditsConsumed": 0
  }
}