Video model · by ByteDanceFree
Seedance 2.0 Fast
Quick text and image to video. Makes 4–15 second clips with sound from text, a photo, start and end frames, or reference images and clips.
- Native audio
- References
- Fast
- Image to video
- Text to video
From ≈ $0.105 a second · 10.5 credits
Specs
- Modes
- Text to video · Image to video · Start & end frames · References
- Duration
- 4–15 s, any whole second
- Resolution
- 480p · 720p
- Aspect ratio
- adaptive · 21:9 · 16:9 · 4:3 · 1:1 · 3:4 · 9:16
- Audio
- Native audio, made with the video
- Frames
- A start image + an optional end frame
- Reference files
- Up to 9 images · 3 videos · 3 audio clips
- File types
- PNG, JPEG, WEBP · up to 20 MB / MP4, WebM · up to 200 MB / MP3, WAV, M4A · up to 50 MB
- Tier
- Free — everyone can use it
Price
Pricing- From
- ≈ $0.105 / s10.5 credits a second
- 5 s video≈ $0.525
- 10 s video≈ $1.05
- 15 s video≈ $1.575
The studio shows the exact price before you generate. Failed runs are refunded.
API
Use Seedance 2.0 Fast from code
Model id seedance. 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": "seedance",
"params": {
"model_version": "fast",
"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 Seedance 2.0 Fast
How long can a Seedance 2.0 Fast video be?
Any whole number of seconds from 4 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.
Other video models
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ProNeeds ProGoogle · Start and end frames to video, with soundGoogleFrom $0.60/sStart and end frames to video, with soundNative audioFrom $0.60/sWan 3.0
Alibaba · Long single shots with reference imagesAlibabaFrom $0.09/sLong single shots with reference imagesNative audioLong shotsReferencesFrom $0.09/s
Make your next clip
Seedance 2.0 Fast · 4–15 s · from about $0.105 a second