Kling 4.0 Video Edit API
Call Kling 4.0 Video Edit with your KeelRouter API key, the same key you use for every other model. From $0.12 per second, paid per call from a prepaid balance. Failed calls are free.
Pricing
| Option | Price |
|---|---|
| 720p | $0.12 per second |
The prices above are for a request without reference images, videos or audio. When the provider reports what it charged for the call, you pay that amount times the same markup as the listed price, so reference inputs, longer inputs and extra outputs cost more and unused options cost less. We hold the highest possible amount when the task starts (reference videos at their maximum length) and refund the rest when it finishes.
Interactive request builder & price estimator
Tier: 720p ($0.12 per second)$0.36(3 × $0.12 per second)
Call it
Async: POST /v1/video/generations returns a taskId; poll the same path with ?task_id= or pass a callback_url.
curl https://api.keelrouter.com/v1/video/generations \
-H "Authorization: Bearer $KEELROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kling-4.0-video-edit",
"prompt": "A paper boat drifting down a rainy street, slow camera follow",
"resolution": "720p"
}'Prompt templates
Copy-ready prompts tuned for Kling 4.0 Video EditCinematic tracking shot with natural physics
POST /v1/video/generationsSpecify camera motion, subject action, and lighting clearly for Kling 4.0 Video Edit.
Low-angle tracking shot following a vintage yellow tram gliding through a rain-slicked cobblestone street at dusk, warm tungsten window reflections on wet stone, steady gimbal motion, 24fps film look
Product macro turntable reveal
POST /v1/video/generationsControlled studio camera move for Kling 4.0 Video Edit.
Slow 180-degree orbital camera move around a frosted glass perfume bottle on dark wet slate, fine water droplets catching warm rim light, shallow depth of field
Parameters
| Name | Type | Notes |
|---|---|---|
| model | string | Required. kling-4.0-video-edit |
| prompt | string | Required. |
| video_url | string | Required. |
| image_urls | array | Range …–10. |
| duration | integer | Range 3–30. |
| resolution | string | One of 720p. Default 720p. |
| callback_url | string | Optional https URL; we POST the result when the task ends |
FAQ
- How much does the Kling 4.0 Video Edit API cost on KeelRouter?
- From $0.12 per second. You pay per call from a prepaid USD balance; failed calls are not charged. The prices above are for a request without reference images, videos or audio. When the provider reports what it charged for the call, you pay that amount times the same markup as the listed price, so reference inputs, longer inputs and extra outputs cost more and unused options cost less. We hold the highest possible amount when the task starts (reference videos at their maximum length) and refund the rest when it finishes.
- How do I call Kling 4.0 Video Edit?
- POST to /v1/video/generations with model "kling-4.0-video-edit". You get a taskId back; poll the same endpoint with ?task_id= or pass a callback_url.
- Is this the official Kling 4.0 Video Edit API?
- No. KeelRouter is an independent API gateway. Requests run on Kling 4.0 Video Edit through our upstream providers, and the video model keeps its own safety filters.
- How long are results kept?
- Result files are kept for 30 days, then deleted. Download what you want to keep.
More from Kling
KeelRouter is an independent service and is not affiliated with Kling. Kling 4.0 Video Edit is a trademark of its owner, used here only to name the model a request runs on.