Kling 4.0 Text to Video API

← Kling Model name: kling-video/v4/text-to-video
Generation type: text_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

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/text-to-video",
    "input_params": {
      "prompt": "A slow cinematic tracking shot along a sunlit coastal road."
    }
  }'

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/text-to-video",
        "input_params": {
            "prompt": "A slow cinematic tracking shot along a sunlit coastal road."
        },
    },
)
print(response.json()["id"])

Input parameters

Send these fields in input_params.

string

required

PromptMaximum characters: 2500.

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

default:"16:9"

The aspect ratio of the generated video frameAllowed values: "16:9", "9:16", "1:1", "21:9".

Complete JSON schema

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "prompt"
  ],
  "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
    },
    "aspect_ratio": {
      "enum": [
        "16:9",
        "9:16",
        "1:1",
        "21:9"
      ],
      "type": "string",
      "title": "Aspect Ratio",
      "default": "16:9",
      "description": "The aspect ratio of the generated video frame"
    }
  }
}

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

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Kling 4.0 Text to Video API

Pricing

Quick start

Input parameters

Response

​Pricing

​Quick start

​Input parameters

​Response

Pricing

Quick start

Input parameters

Response