Kling V2.1 Multi Image to Image

kling-v2-1-multi-image2image

Kirin V2.1 reference-to-image generation uses multiple reference images for subject, scene, and style control to produce a new image.

API Notes

kling-v2-1-multi-image2image supports up to 4 subject reference images through subject_image_list, and optionally supports scene_image and style_image

Endpoints

POST /v1/queue/kling-v2-1-multi-image2image # Create task

GET /v1/queue/kling-v2-1-multi-image2image/requests/{request_id}/status # Check status

GET /v1/queue/kling-v2-1-multi-image2image/requests/{request_id}/response # Get result

PUT /v1/queue/kling-v2-1-multi-image2image/requests/{request_id}/cancel # Cancel task

Request parameters

curl --request 'POST' 'https://odirouter.ai/model/v1/queue/kling-v2-1-multi-image2image' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --location \
  --data-raw '{
  "prompt": "A woman in a flowing red dress on the grassland, in Ghibli style.",
  "subject_image_list": [
    {
      "subject_image": "https://www.gstatic.com/webp/gallery/4.jpg"
    },
    {
      "subject_image": "https://www.gstatic.com/webp/gallery/1.jpg"
    }
  ],
  "scene_image": "https://www.gstatic.com/webp/gallery/2.jpg",
  "style_image": "https://www.gstatic.com/webp/gallery/3.jpg",
  "n": 1,
  "aspect_ratio": "16:9"
}'

prompt string

Positive text prompt.

Must not exceed 2500 characters.

subject_image_list array required

Subject reference image list. Supports 1 to 4 images, each passed as a URL or raw Base64 string through the subject_image key:

"subject_image_list": [

{ "subject_image": "image_url_or_base64" },

{ "subject_image": "image_url_or_base64" }

]

No cropping is applied on the API side - upload images with the subject already prepared as intended

Supports Base64 encoded images or image URLs (must be publicly accessible)

Note: When using Base64, do not add any prefix such as data:image/png;base64, - pass the raw Base64 string directly

Supported formats: .jpg / .jpeg / .png

File size must not exceed 10MB; width and height must be at least 300px; aspect ratio must be between 1:2.5 and 2.5:1

subject_image string required

Subject image URL or raw Base64 string

scene_image string

Optional scene reference image.

Supports Base64 encoded image or image URL (must be publicly accessible)

Supported formats: .jpg / .jpeg / .png

File size must not exceed 10MB; width and height must be at least 300px; aspect ratio must be between 1:2.5 and 2.5:1

style_image string

Optional style reference image.

Supports Base64 encoded image or image URL (must be publicly accessible)

Supported formats: .jpg / .jpeg / .png

File size must not exceed 10MB; width and height must be at least 300px; aspect ratio must be between 1:2.5 and 2.5:1

n integer

Number of images to generate.

Default: 1

Range: 1 - 9

aspect_ratio string

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

Default: 16:9

Options: 16:9, 9:16, 1:1, 4:3, 3:4, 3:2, 2:3, 21:9

watermark_info object

Whether to generate a watermarked result at the same time. Custom watermarks are not supported.

enabled boolean

true: Generate a watermarked result

false: Do not generate a watermarked result

callback_url string

Callback notification address for this task. If configured, the server will actively notify when the task status changes.

external_task_id string

Custom task ID.

A user-defined task ID. It does not override the system-generated task ID but can be used to query the task.

Note: It must be unique per user.

Response parameters

{
  "request_id": "task_01hxyz...",
  "response_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-multi-image2image/requests/task_01hxyz.../response",
  "status_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-multi-image2image/requests/task_01hxyz.../status",
  "cancel_url": "https://odirouter.ai/model/v1/queue/kling-v2-1-multi-image2image/requests/task_01hxyz.../cancel",
  "queue_position": 0
}

Field	Type	Description
`request_id`	string	Task ID used for all follow-up operations.
`response_url`	string	URL to fetch the final result.
`status_url`	string	URL to query task status.
`cancel_url`	string	URL to cancel the task.
`queue_position`	int	Current queue position.

Follow-up operations

Check status

Get result

Cancel task

Error handling