Videofrom$0.1400 / s
Kling Video v3 Pro
Kling Video v3 ProGenerates video from text, an image · 1080p · 4–15 s · native audio
text-to-videoimage-to-video
curl -X POST https://api.open.sume.com/v1/video-router/generate \
-H "Authorization: Bearer $SUME_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"kling-3","prompt":"A cinematic tracking shot along a sunlit coastal road","duration":5,"resolution":"1080p","aspect_ratio":"16:9","generate_audio":false}'1. Calling the API
Kling Video v3 Pro has the model id kling-3. Send a JSON body to POST https://api.open.sume.com/v1/video-router/generate.
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| model | string | Yes | — | "kling-3" |
| prompt | string | Yes | — | What happens in the video. |
| image_url | string | No | — | First frame (HTTPS image). |
| end_image_url | string | No | — | Last frame (HTTPS image). |
| duration | integer | No | 5 | Seconds, 4–15. |
| resolution | string | No | 1080p | Output resolution. Options: 1080p. |
| aspect_ratio | string | No | 16:9 | Frame shape. Options: 16:9, 9:16, 1:1. |
| generate_audio | boolean | No | false | Generate a soundtrack with the video. |
2. Authentication
Send your open.sume.com key as a bearer token from server code only. Keys minted on open.sume.com bill this balance in dollars and call the model API only.
Authorization: Bearer $SUME_API_KEY
Pricing
Dollars per unit at each option: the serving route's cost × 1.25, rounded up to $0.0001. The estimate above is the exact charge.
| Option | Price |
|---|---|
| 1080p · audio off | $0.1400 / s |
| 1080p · audio on | $0.2100 / s |
More models by Kling
Price, resolution and duration show each model's full range.
| Model | Type | Price | Resolution | Duration |
|---|---|---|---|---|
| Kling Avatar 2.0 Pro | lipsync | $0.1438 / s | — | 2 – 60 s |
| Kling Avatar 2.0 | lipsync | $0.0703 / s | — | 2 – 60 s |
| Kling Lipsync | lipsync | $0.0438 / s | — | 2 – 10 s |