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Kling v3.0 Standard Image-to-Video
Kling v3.0 Standard Image-to-Video transforms static images into dynamic videos with natural motion, smooth scene dynamics, optional audio co-generation, and multi-prompt composition support.
This is an asynchronous API; only the task_id will be returned. You should use the task_id to request the Task Result API to retrieve the video generation results.

Request Headers

Content-Type
string
required
Supports: application/json
Authorization
string
required
Bearer authentication format, for example: Bearer {{API Key}}.

Request Body

image
string
required
First frame image for video; supports .jpg, .jpeg, .png. Image file size must not exceed 10MB; width and height must be >= 300px; aspect ratio must be between 1:2.5 and 2.5:1.
sound
boolean
default:false
Whether to generate audio simultaneously when generating video.
prompt
string
required
Positive prompt text for video generation, describing scene motion, camera moves, actions, voice style, ambience, and sound effects; must not exceed 2500 characters.
duration
integer
default:5
Duration of generated video in seconds (3-15).Optional 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 result in generated content more closely following the prompt.Value range: [0, 1]
end_image
string
Ending frame image URL for guided transitions between start and end frames. Same format constraints as image. Cannot be used together with multi_prompt.
multi_prompt
object[]
Array of prompts for multi-shot video composition. Each item contains a prompt and duration for one segment. Cannot be used together with end_image.
negative_prompt
string
Negative prompt specifying elements to avoid in visuals and audio; must not exceed 2500 characters.

Response

task_id
string
required
Use the task_id to request the Task Result API to retrieve the generated outputs.
Last modified on July 3, 2026