Kling 4.0 Image to Video API

← Kling Model name: kling-video/v4/image-to-video
Generation type: image_to_video
Endpoint: POST /api/asset_generator/

Pricing

Duration	720p	1080p	2k	4k
3s	2.5	3.5	4.0	6.5
4s	3.0	4.5	5.5	8.5
5s	3.5	5.5	6.5	10.5
6s	4.5	6.5	8.0	13.0
7s	5.0	7.5	9.0	15.0
8s	6.0	8.5	10.5	17.0
9s	6.5	9.5	11.5	19.0
10s	7.0	10.5	13.0	21.0
11s	8.0	12.0	14.0	23.5
12s	8.5	13.0	15.5	25.5
13s	9.5	14.0	16.5	27.5
14s	10.0	15.0	18.0	29.5
15s	10.5	16.0	19.0	31.5
16s	11.5	17.0	20.5	34.0
17s	12.0	18.0	21.5	36.0
18s	13.0	19.0	23.0	38.0
19s	13.5	20.0	24.0	40.0
20s	14.0	21.0	25.5	42.0
21s	15.0	22.5	26.5	44.5
22s	15.5	23.5	28.0	46.5
23s	16.5	24.5	29.0	48.5
24s	17.0	25.5	30.5	50.5
25s	17.5	26.5	31.5	52.5
26s	18.5	27.5	33.0	55.0
27s	19.0	28.5	34.5	57.0
28s	20.0	29.5	35.5	59.0
29s	20.5	30.5	37.0	61.0
30s	21.0	31.5	38.0	63.0

Prices are per output. When a request asks for several outputs, the charge is this price times the number of outputs.

Quick start

The example uses sample media from our CDN. Swap in publicly accessible URLs for your own files.

curl --request POST \
  --url https://api.creatify.ai/api/asset_generator/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-ID: your-api-id' \
  --header 'X-API-KEY: your-api-key' \
  --data '{
    "model_name": "kling-video/v4/image-to-video",
    "input_params": {
      "prompt": "She looks up from her laptop and smiles at the camera.",
      "start_image_url": "https://d35ghwdno3nak3.cloudfront.net/tutorial/avatar-aurora/recommendation-4.jpg"
    }
  }'

import requests

response = requests.post(
    "https://api.creatify.ai/api/asset_generator/",
    headers={"X-API-ID": "your-api-id", "X-API-KEY": "your-api-key"},
    json={
        "model_name": "kling-video/v4/image-to-video",
        "input_params": {
            "prompt": "She looks up from her laptop and smiles at the camera.",
            "start_image_url": "https://d35ghwdno3nak3.cloudfront.net/tutorial/avatar-aurora/recommendation-4.jpg"
        },
    },
)
print(response.json()["id"])

Input parameters

Send these fields in input_params.

string

required

PromptMaximum characters: 2500.

string

required

First frame of the video.JPEG/PNG. Max file size: 50MiB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s

string

default:"5"

The duration of the generated video in secondsAllowed values: "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30".

string

default:"720p"

Output resolution (720p, 1080p, 2K, 4K).Allowed values: "720p", "1080p", "2k", "4k".

string

Last frame of the video. Cannot be used without a start frame.JPEG/PNG. Max file size: 50MiB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s

Complete JSON schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "prompt",
    "start_image_url"
  ],
  "properties": {
    "prompt": {
      "type": "string",
      "title": "Prompt",
      "maxLength": 2500
    },
    "duration": {
      "enum": [
        "3",
        "4",
        "5",
        "6",
        "7",
        "8",
        "9",
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20",
        "21",
        "22",
        "23",
        "24",
        "25",
        "26",
        "27",
        "28",
        "29",
        "30"
      ],
      "type": "string",
      "title": "Duration",
      "default": "5",
      "description": "The duration of the generated video in seconds"
    },
    "resolution": {
      "enum": [
        "720p",
        "1080p",
        "2k",
        "4k"
      ],
      "type": "string",
      "title": "Resolution",
      "default": "720p",
      "description": "Output resolution (720p, 1080p, 2K, 4K).",
      "x-advance-settings": true
    },
    "start_image_url": {
      "type": "string",
      "title": "Start Image",
      "timeout": 20,
      "min_width": 300,
      "min_height": 300,
      "description": "First frame of the video.\n\nJPEG/PNG. Max file size: 50MiB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s",
      "max_file_size": 52428800,
      "min_aspect_ratio": 0.4,
      "max_aspect_ratio": 2.5,
      "x-ui-name": "start_image"
    },
    "end_image_url": {
      "type": "string",
      "title": "End Image",
      "timeout": 20,
      "min_width": 300,
      "min_height": 300,
      "description": "Last frame of the video. Cannot be used without a start frame.\n\nJPEG/PNG. Max file size: 50MiB, Min width: 300px, Min height: 300px, Min aspect ratio: 0.40, Max aspect ratio: 2.50, Timeout: 20.0s",
      "max_file_size": 52428800,
      "min_aspect_ratio": 0.4,
      "max_aspect_ratio": 2.5,
      "x-ui-name": "end_image"
    }
  }
}

Response

The request returns the task with status: "initializing". Poll GET /api/asset_generator/{id}/ until status is done or failed, or pass a webhook_url to be notified. A finished task lists its files in assets and the credits it charged in credits_used.

Get Started

URL to Video

Aurora

Boreal

Stock AI Avatar

Custom Avatar

Custom Template

Asset Generator

Ad Clone

Text to Speech

IAB Images

HTML Interactive Ad

Link Parser

AI Ad Script

Stock AI Voice

Stock AI Music

Workspace

AI Shorts (Deprecated)

AI Editing (Deprecated)

Product Video (Deprecated)

Kling 4.0 Image to Video API

Pricing

Quick start

Input parameters

Response

​Pricing

​Quick start

​Input parameters

​Response

Pricing

Quick start

Input parameters

Response