Video model · by KuaishouFree
Kling 3.0 Fast
Video from text, a photo, and start and end frames. Makes 3–15 second clips with sound from text, a photo, or start and end frames.
- Native audio
- Cinematic
- Fast
- Image to video
- Text to video
From ≈ $0.15 a second · 15 credits
- No samples yet
Specs
- Modes
- Text to video · Image to video · Start & end frames
- Duration
- 3–15 s, any whole second
- Resolution
- 720p · 1080p
- Aspect ratio
- 16:9 · 9:16 · 1:1
- Audio
- Native audio, made with the video
- Frames
- A start image + an optional end frame
- File types
- PNG, JPEG, WEBP · up to 20 MB / MP4, WebM · up to 200 MB
- Tier
- Free — everyone can use it
Price
Pricing- From
- ≈ $0.15 / s15 credits a second
- 5 s video≈ $0.75
- 10 s video≈ $1.50
- 15 s video≈ $2.25
The studio shows the exact price before you generate. Failed runs are refunded.
API
Use Kling 3.0 Fast from code
Model id kling-video. Same price and limits as the studio.
REST · POST /v1/jobs
curl -X POST "https://api.der.run/v1/jobs" \
-H "Authorization: Bearer $DER_API_KEY" \
-H "Idempotency-Key: $(uuidgen)" \
-H "Content-Type: application/json" \
-d '{
"model": "kling-video",
"params": {
"model_version": "fast",
"version": "3.0",
"mode": "text-to-video",
"duration": 5,
"prompt": "…"
}
}'
# then poll every 20 s until it’s finished
curl "https://api.der.run/v1/jobs/{id}" \
-H "Authorization: Bearer $DER_API_KEY"FAQ
About Kling 3.0 Fast
How long can a Kling 3.0 Fast video be?
Any whole number of seconds from 3 to 15. Longer clips cost more — the studio shows the price first.
How long are my videos kept?
7 days. Keep the ones you want in your Library (up to 200) so they don’t expire.
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Make your next clip
Kling 3.0 Fast · 3–15 s · from about $0.15 a second