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POST
/
kling-v3-i2v
/
async
Kling V3 I2V
curl --request POST \
  --url https://api.modellix.ai/api/v1/kling/kling-v3-i2v/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "image": "https://example.com/keyframe.jpg",
  "prompt": "The subject slowly turns toward the camera while wind moves through their hair"
}
'
{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-v3-i2v-123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-v3-i2v-123"
    }
  }
}

Authorizations

​
Authorization
string
header
required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json

Kling V3 image-to-video request. image and prompt are required. Supported public fields are image, prompt, negative_prompt, sound, cfg_scale, mode, aspect_ratio, and duration.

​
image
string
required

Reference image URL or Base64 string.

Minimum string length: 1
Example:

"https://example.com/keyframe.jpg"

​
prompt
string
required

Video generation prompt.

Required string length: 1 - 2500
Example:

"The subject slowly turns toward the camera while wind moves through their hair"

​
negative_prompt
string

Negative prompt describing undesired elements.

Required string length: 1 - 2500
Example:

"blurry, shaky, low detail"

​
sound
enum<string>
default:off

Audio generation switch.

Available options:
on,
off
Example:

"off"

​
cfg_scale
number

Prompt adherence strength between 0.0 and 1.0.

Required range: 0 <= x <= 1
Example:

0.7

​
mode
enum<string>
default:std

Generation mode.

Available options:
std,
pro
Example:

"pro"

​
aspect_ratio
enum<string>

Video aspect ratio.

Available options:
16:9,
9:16,
1:1
Example:

"16:9"

​
duration
enum<integer>
default:5

Video duration in seconds. Public API accepts integer values.

Available options:
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15
Example:

5

Response

Task submitted successfully

​
code
integer
required

Response code, 0 indicates success

Example:

0

​
message
string
required

Response message

Example:

"success"

​
data
object
required