Kling AI Avatar Standard

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.

Overview

Generates a talking video from one portrait image and one speech audio clip. AI Avatar Standard outputs 720p and AI Avatar Pro outputs 1080p; the video length follows the audio.

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

In production environments, it is recommended to use the callBackUrl parameter to receive automatic notifications upon generation completion, 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 kling/ai-avatar-standard for this endpoint Default："kling/ai-avatar-standard"。 Allowed values：kling/ai-avatar-standard。 示例：kling/ai-avatar-standard。
callBackUrl	string	No	The URL to receive generation task completion updates. Optional but recommended for production use. - System will POST task status and results to this URL when generation completes - Callback includes generated content URLs and task information - Your callback endpoint should accept POST requests with JSON payload containing 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	No	Input parameters for the generation task
input.image_url	string	Yes	The URL of the image to use as your avatar (File URL after upload, not file content; Accepted types: image/jpeg, image/png; Max size: 10.0MB) 示例：https://file.aiquickdraw.com/custom-page/akr/section-images/17579268936223zs9l3dt.png。
input.audio_url	string	Yes	The URL of the audio file (must be the URL of the uploaded file, not the file content; supported formats: audio/mpeg, audio/wav, audio/x-wav, audio/aac, audio/mp4, audio/ogg; audio size is limited to 100M, and the duration cannot exceed 5 minutes) 示例：https://file.aiquickdraw.com/custom-page/akr/section-images/17579258340109gghun47.mp3。
input.prompt	string	Yes	Required, non-empty. Describe the avatar's expression, movement and camera; the speech comes from audio_url. Up to 5,000 characters. 示例：A young woman speaking into a podcast microphone with natural expressions。

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": "kling/ai-avatar-standard",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "image_url": "https://file.aiquickdraw.com/custom-page/akr/section-images/17579268936223zs9l3dt.png",
    "audio_url": "https://file.aiquickdraw.com/custom-page/akr/section-images/17579258340109gghun47.mp3",
    "prompt": "A young woman speaking into a podcast microphone with natural expressions"
  }
}'

{
  "model": "kling/ai-avatar-standard",
  "callBackUrl": "https://your-domain.com/api/callback",
  "input": {
    "image_url": "https://file.aiquickdraw.com/custom-page/akr/section-images/17579268936223zs9l3dt.png",
    "audio_url": "https://file.aiquickdraw.com/custom-page/akr/section-images/17579258340109gghun47.mp3",
    "prompt": "A young woman speaking into a podcast microphone with natural expressions"
  }
}

Response

200 — Request successful

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_kling_1765185996677"
  }
}

Callback

videoTaskCompleted

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

The system sends this callback when the kling/ai-avatar-standard 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：kling/ai-avatar-standard。 示例：kling/ai-avatar-standard。
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": "kling/ai-avatar-standard",
    "state": "success",
    "param": "{\"input\":\"{\\\"image_url\\\":\\\"https://example.com/input-image.jpg\\\",\\\"audio_url\\\":\\\"https://example.com/input-audio.mp3\\\",\\\"prompt\\\":\\\"\\\"}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"kling/ai-avatar-standard\"}",
    "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": "kling/ai-avatar-standard",
    "state": "fail",
    "param": "{\"input\":\"{\\\"image_url\\\":\\\"https://example.com/input-image.jpg\\\",\\\"audio_url\\\":\\\"https://example.com/input-audio.mp3\\\",\\\"prompt\\\":\\\"\\\"}\",\"callBackUrl\":\"https://example.com/callback\",\"model\":\"kling/ai-avatar-standard\"}",
    "failCode": "400",
    "failMsg": "<error detail>",
    "costTime": 12,
    "creditsConsumed": 0
  }
}