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POST
https://api.novita.ai
/
v3
/
async
/
kling-v2.1-i2v
Kling V2.1 Image to Video
curl --request POST \
  --url https://api.novita.ai/v3/async/kling-v2.1-i2v \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "image": "<string>",
  "prompt": "<string>",
  "mode": "<string>",
  "duration": "<string>",
  "guidance_scale": 123,
  "negative_prompt": "<string>"
}
'
{
  "task_id": "<string>"
}
Kling V2.1 is the latest evolution of Kuaishou’s AI-powered video‑generation model, designed to seamlessly create short, cinematic‑quality clips from a single image or a text prompt. It represents a major leap forward from Kling 2.0, emphasizing motion fidelity, visual coherence, and prompt accuracy.
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 of the video; Supported image formats include .jpg, .jpeg, .png; The image file size cannot exceed 10MB, and the image resolution should not be less than 300*300px.
​
prompt
string
required
Text prompt for generation; Positive text prompt; Cannot exceed 2500 characters.
​
mode
string
The mode of the video generation.Supports:
  • Standard: fast creation, lower cost, and generate 720p video.
  • Professional: high quality, higher cost, generate 1080p video.
Default: Standard.
​
duration
string
default:"5"
The duration of the generated media in seconds.Available options: 5, 10
​
guidance_scale
number
default:0.5
The guidance scale to use for the generation.Range: 0 to 1 Step: 0.01
​
negative_prompt
string
Negative text prompt; Cannot exceed 2500 characters.

​
Response

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