VideoPriced by file length
Kling 4.0 Motion API
Transfer motion from a reference video to the character in an image. 720p–1080p, priced by clip length.
- Input → Output
- Price
- Priced by file length
- Resolution
- 720p–1080p
Supported parameters
Values this model accepts through the API.
| Parameter | Accepted values |
|---|---|
| prompt | up to 5,000 characters |
| resolution | 720p, 1080p |
| aspect_ratio | 16:9, 9:16, 1:1, 21:9 |
| Reference images | up to 1 |
| Reference videos | up to 1 |
Pricing
Priced by file length
The price depends on the length and size of the file you send. Call /quote with the file to see the exact price before generating.
One Fuzion credit balance covers the web app, the API, and MCP. No separate top-up · 1 credit = ฿1
Use it through the API
Request a quote, generate with the quote_id it returns, then poll the job until it finishes.
curl -X POST https://fuzionhub.co/api/v1/quote \
-H "Authorization: Bearer $FUZION_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "fuzion/kling-4.0/motion",
"prompt": "A golden retriever running on a beach at sunset, cinematic"
}'curl -X POST https://fuzionhub.co/api/v1/generate \
-H "Authorization: Bearer $FUZION_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"quote_id": "<quote_id>",
"model": "fuzion/kling-4.0/motion",
"prompt": "A golden retriever running on a beach at sunset, cinematic"
}'
curl https://fuzionhub.co/api/v1/jobs/<job_id> \
-H "Authorization: Bearer $FUZION_API_KEY"Frequently asked questions
What is Kling 4.0 Motion?
Transfer motion from a reference video to the character in an image. 720p–1080p, priced by clip length.
How much does Kling 4.0 Motion cost?
Priced by file length. Jobs are charged in Fuzion credits (1 credit = ฿1), and one balance covers the web app, the API, and MCP.
What resolutions and lengths does Kling 4.0 Motion support?
Kling 4.0 Motion supports 720p–1080p resolution, aspect ratios 16:9, 9:16, 1:1, 21:9.
What inputs does Kling 4.0 Motion accept?
It accepts text, image, video, with prompts up to 5,000 characters.
How do I use Kling 4.0 Motion through the API?
Create an API key in your Fuzion account, then call /api/v1/quote and /api/v1/generate with the model id "fuzion/kling-4.0/motion" (served on Fuzion). It also works through MCP with AI agents.
Am I charged if a job fails?
No. Jobs that fail on the provider side are refunded automatically.
