Kling
Kling 3.0 API and pricing
Run Kling 3.0, Kling Omni, 2.6 and 2.5 Turbo from the API, from the Root web app, or from Claude and ChatGPT. You pay per clip from one balance, or use your own Kling key inside Root. A five-second Kling 3.0 clip at 720p with sound costs $0.73.
Updated
AI video made in Root
What Kling 3.0 can do
- Clips up to 10 seconds from a prompt or an image.
- 720p, 1080p, 4K output, with native sound you can turn on or off.
- Give it a first and a last frame and it animates between them.
- Aspect ratios: 16:9, 9:16, 1:1.
Kling API pricing
What one clip costs on Root, with sound on where the model has it. Prices are per clip, in dollars; 100 credits is $1. Failed runs are not charged.
| Model | 5 s, 720p | 10 s, 720p | 10 s, 1080p | 10 s, 4K |
|---|---|---|---|---|
| Kling 3.0 | $0.73 | $1.45 | $1.94 | $4.83 |
| Kling Omni | $0.65 | $1.29 | $1.61 | $4.83 |
| Kling 2.6 | $0.81 | up to $3.22 | up to $3.22 | — |
| Kling 2.5 Turbo | $0.25 | up to $3.22 | up to $3.22 | — |
A dash means that model can't make that clip. “Up to” means Kling bills that clip on what it reports after the run, so it can cost less. Kling 2.6 with sound always renders at 1080p, and its price includes that. The API and the app show the price before a run starts, and you're charged for what the run actually used. Compare every model
Which Kling model to use
| Model | Best for | Longest clip | Resolution | Sound |
|---|---|---|---|---|
| Kling 3.0 | Realistic motion and physics, and 4K output. | 10 s | 720p, 1080p, 4K | On or off |
| Kling Omni | Several reference images or elements in one shot, and longer takes. | 15 s | 720p, 1080p, 4K | On or off |
| Kling 2.6 | Realism and close prompt-following, with sound. | 10 s | 720p, 1080p | On or off |
| Kling 2.5 Turbo | Fast, silent takes while you iterate. | 10 s | 720p, 1080p | No |
We reach for Kling 3.0 when a shot needs believable weight and motion, and when another model refuses a subject it shouldn't.
The Kling API
Make an API key in Root under Settings, then API, and choose its daily spending limit. Then send a request:
curl https://root.film/api/v1/generations \
-H "Authorization: Bearer rfk_your_key" \
-H "Content-Type: application/json" \
-d '{"model":"kling-v3","project_id":"YOUR_PROJECT_ID",
"input":{"prompt":"a cyclist crossing a rainy bridge at night",
"duration_seconds":5,"resolution":"1080p"}}'- The finished clip is saved to the project you name, next to everything else in it.
- Pass an image with image_url to start from a frame, and last_frame_url to set where it ends.
- Send an Idempotency-Key header and a retry never charges twice.
- Read the API guide
Or ask for it in Claude
Connect Root to Claude or ChatGPT and ask for a Kling clip in the chat. How to connect
Kling questions
How much does the Kling 3.0 API cost?
On Root, a five-second Kling 3.0 clip at 720p with sound costs $0.73. Ten seconds in 4K costs $4.83. The API and the app show the price before a run starts, you're charged for what the run actually used, and failed runs are not charged.
Do I need a Kling account to use the Kling API on Root?
No. You pay from your Root balance and Root handles the rest. If you have a Kling key already, you can use it inside Root too.
How long can a Kling clip be?
Kling 3.0 makes clips up to 10 seconds, and Kling Omni goes up to 15 seconds.
What's the difference between Kling 3.0 and Kling Omni?
Kling 3.0 is the main model: one prompt, optionally a first and last frame. Omni takes several reference images or elements in one shot, so it's the one to use when a character or product has to look the same across takes.
Can I use Kling from Claude or ChatGPT?
Yes. Connect Root to Claude or ChatGPT and ask for a Kling clip in the chat. It's priced and saved to your project the same way as a clip made in the app.