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POST
/
kling
/
v1
/
images
/
generations
Multi-Image to Image
curl --request POST \
  --url https://api.cometapi.com/kling/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subject_image_list": [
    {
      "subject_image": "https://filesystem.site/cdn/20250814/goDW44JIf6eSuxAS7TNringhWjO9kW.png"
    },
    {
      "subject_image": "https://filesystem.site/cdn/20250814/goDW44JIf6eSuxAS7TNringhWjO9kW.png"
    },
    {
      "subject_image": "https://filesystem.site/cdn/20250814/goDW44JIf6eSuxAS7TNringhWjO9kW.png"
    },
    {
      "subject_image": "https://filesystem.site/cdn/20250814/goDW44JIf6eSuxAS7TNringhWjO9kW.png"
    }
  ]
}
'
{
  "code": 123,
  "message": "<string>",
  "request_id": "<string>",
  "data": {
    "task_id": "<string>",
    "task_status": "<string>",
    "created_at": 123,
    "updated_at": 123
  }
}
Use this endpoint when you want Kling to generate one image from multiple subject references plus optional scene or style references.

​
Before you call it

  • Provide 2 to 4 images in subject_image_list
  • Use model_name: kling-v2
  • Add scence_image or style_image only when the core subject composition already works
  • Treat this as an async generation route and save the returned task id

​
Task flow

1

Submit the image-generation task

Send the subject image list and prompt, then store the returned task id.
2

Poll the task

Continue with Individual Queries using the Kling image query path until the task reaches a terminal state.
3

Persist the result

Save the generated image into your own storage if you need durable access.
For the complete parameter reference, see the official Kling documentation.

Authorizations

​
Authorization
string
header
required

Bearer token authentication. Use your CometAPI key.

Headers

​
Content-Type
string

Content type of the request body.

Body

application/json

Kling Image Generation API request body definition

​
subject_image_list
object[]
required

List of subject reference images. Minimum 2, maximum 4.

​
model_name
enum<string>
default:kling-v2

Model to use for multi-image generation.

Available options:
kling-v2
​
prompt
string

Text prompt describing the desired output. Max 2500 characters.

​
scence_image
string

Optional scene reference image. Same format and size constraints as subject images.

​
style_image
string

Optional style reference image. Same format and size constraints as subject images.

​
n
integer
default:1

Number of images to generate.

​
aspect_ratio
enum<string>
default:16:9

Aspect ratio of the generated image (width:height).

Available options:
16:9,
9:16,
1:1,
4:3,
3:4,
3:2,
2:3,
21:9
​
callback_url
string

Webhook URL for task status notifications. The server sends a callback when the task status changes.

​
external_task_id
string

Optional user-defined task ID for your own tracking. Does not replace the system-generated task ID. Must be unique per account.

Response

200 - application/json

Successful Response

​
code
integer

Error code; specifically define the error code

​
message
string

error message

​
request_id
string

Request ID, system-generated, for tracking requests, troubleshooting issues

​
data
object