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POST
/
v3
/
async
/
kling-v3.0-std-i2v
Kling v3.0 Standard Image-to-Video
curl --request POST \
  --url https://api.highwayapi.ai/v3/async/kling-v3.0-std-i2v \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "image": "<string>",
  "sound": true,
  "prompt": "<string>",
  "duration": 123,
  "cfg_scale": 123,
  "end_image": "<string>",
  "multi_prompt": [
    {
      "prompt": "<string>",
      "duration": 123
    }
  ],
  "negative_prompt": "<string>"
}
'
{
  "task_id": "<string>"
}
The Kling v3.0 Standard image-to-video tool can convert static images into dynamic videos, generating natural motion and smooth scene dynamics while maintaining subject consistency. It supports synchronized audio generation and multi-part prompt combinations.
This is an asynchronous API that only returns the asynchronous task’s task_id. You should use this task_id to request the Get Task Result API to retrieve the generated result.

​
Request Headers

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Content-Type
string
required
Enum value: application/json
​
Authorization
string
required
Bearer authentication format: Bearer {{API Key}}.

​
Request Body

​
image
string
required
The first-frame image for the video; supports .jpg, .jpeg, and .png. The image file size must not exceed 10MB; both width and height must be >= 300px; the aspect ratio must be between 1:2.5 and 2.5:1.
​
sound
boolean
default:false
Whether to generate audio while generating the video.
​
prompt
string
required
The positive prompt text for generating the video, describing scene motion, camera movement, actions, audio style, atmosphere, and sound effects; must not exceed 2500 characters.
​
duration
integer
default:5
The duration of the generated video in seconds, ranging from 3 to 15.Allowed values: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
​
cfg_scale
number
Controls the flexibility of video generation. Lower values produce more natural motion; higher values make the generated content adhere more closely to the prompt.Value range: [0, 1]
​
end_image
string
The last-frame image URL, used to guide the transition between the starting frame and the ending frame. The format constraints are the same as for image. Cannot be used together with multi_prompt.
​
multi_prompt
array
An array of multi-part prompts, used for composing multi-shot videos. Each item contains a prompt and the duration of that segment. Cannot be used together with end_image.
​
negative_prompt
string
The negative prompt, specifying elements to avoid in the visuals and audio; must not exceed 2500 characters.

​
Response

​
task_id
string
required
Use task_id to request the Get Task Result API to retrieve the generated output.