Seedance 2.0 Fast API — Fast Multimodal Video Generation

Generate 4-15 second videos quickly with Seedance 2.0 Fast through VicSee API. Same multimodal reference support as Standard, 19-20% cheaper. 80-670 credits.

Try it now: Use the Seedance 2.0 Fast Generator to iterate on videos quickly.

Pricing

Text to Video / Image to Video

Duration	480p Credits	480p (Pro Yearly)	480p (Pro Monthly)	720p Credits	720p (Pro Yearly)	720p (Pro Monthly)
4s	80	$0.48	$0.96	180	$1.08	$2.16
5s	100	$0.60	$1.20	220	$1.32	$2.64
6s	120	$0.72	$1.44	270	$1.62	$3.24
7s	140	$0.84	$1.68	310	$1.86	$3.72
8s	160	$0.96	$1.92	360	$2.16	$4.32
9s	180	$1.08	$2.16	400	$2.40	$4.80
10s	200	$1.20	$2.40	450	$2.70	$5.40
11s	220	$1.32	$2.64	490	$2.94	$5.88
12s	240	$1.44	$2.88	540	$3.24	$6.48
13s	260	$1.56	$3.12	580	$3.48	$6.96
14s	280	$1.68	$3.36	630	$3.78	$7.56
15s	300	$1.80	$3.60	670	$4.02	$8.04

Reference to Video (with video references)

When using reference_video_urls, credits are calculated dynamically based on total video duration:

Total credits = per-second rate x (sum of input video durations + output duration)

Resolution	Credits per second
480p	13/s
720p	28/s

Example: 10s reference video + 8s output at 720p = (10 + 8) x 28 = 504 credits

Reference to Video requests using only image and/or audio references (no video references) use the standard pricing table above.

Note: Audio generation is included at no extra cost. Credits are deducted only on successful generation.

Credit range: 80-670 credits (standard pricing), variable for video references.

Endpoint

POST https://vicsee.com/api/v1/generate

See Authentication for API key setup.

Text to Video

Generate videos from text descriptions with native audio. Faster generation than Standard, ideal for drafting and iteration.

Request Parameters

Parameter	Type	Required	Description
model	string	Yes	`seedance-2-0-fast-text-to-video`
input.prompt	string	Yes	Video description (max 2500 chars)
input.duration	number	No	4-15 seconds, any integer (default: 8)
input.resolution	string	No	`480p`, `720p` (default: 720p)
input.aspect_ratio	string	No	`16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`, `adaptive` (default: 16:9)
input.audio	boolean	No	Enable native audio (default: true)
input.web_search	boolean	No	Enhance prompt with web search (default: false)

Example Request

curl -X POST https://vicsee.com/api/v1/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2-0-fast-text-to-video",
    "input": {
      "prompt": "A cat walking slowly across a sunlit wooden floor",
      "duration": 4,
      "resolution": "480p",
      "aspect_ratio": "16:9"
    }
  }'

Image to Video

Animate images into video using first frame and optional last frame control.

Request Parameters

Parameter	Type	Required	Description
model	string	Yes	`seedance-2-0-fast-image-to-video`
input.prompt	string	Yes	Description of the animation
input.image_urls	string[]	Yes	Array of 1-2 images (first frame, optional last frame)
input.duration	number	No	4-15 seconds, any integer (default: 8)
input.resolution	string	No	`480p`, `720p` (default: 720p)
input.aspect_ratio	string	No	`16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`, `adaptive` (default: 16:9)
input.audio	boolean	No	Enable native audio (default: true)

Example Request

curl -X POST https://vicsee.com/api/v1/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2-0-fast-image-to-video",
    "input": {
      "prompt": "Smooth transition between the two scenes",
      "image_urls": [
        "https://example.com/first-frame.jpg",
        "https://example.com/last-frame.jpg"
      ],
      "duration": 8,
      "resolution": "720p"
    }
  }'

Reference to Video

Generate videos using multimodal references: images, videos, and audio. Same capabilities as Seedance 2.0 Standard at lower cost.

Request Parameters

Parameter	Type	Required	Description
model	string	Yes	`seedance-2-0-fast-reference-to-video`
input.prompt	string	No	Text description to guide generation
input.reference_image_urls	string[]	No	Up to 7 reference images (character refs, scene refs)
input.reference_video_urls	string[]	No	Up to 3 reference videos (motion, style)
input.reference_audio_urls	string[]	No	Up to 3 reference audio files (voice, music, SFX)
input.duration	number	No	4-15 seconds, any integer (default: 8)
input.resolution	string	No	`480p`, `720p` (default: 720p)
input.aspect_ratio	string	No	`16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`, `adaptive` (default: 16:9)
input.audio	boolean	No	Enable native audio (default: true)

At least one reference type must be provided. You can combine all three in a single request.

Reference Constraints

Type	Max Count	Max Size	Duration Limit	Formats
Images	7	30MB each	—	jpeg, png, webp, bmp, tiff, gif
Videos	3	50MB each	2-15s each, total max 15s	mp4, mov
Audio	3	10MB each	2-15s each, total max 15s	mp3, wav

Example Request

curl -X POST https://vicsee.com/api/v1/generate \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2-0-fast-reference-to-video",
    "input": {
      "prompt": "The character performs a dynamic dance routine",
      "reference_image_urls": [
        "https://example.com/character-ref.jpg"
      ],
      "reference_audio_urls": [
        "https://example.com/music-track.mp3"
      ],
      "duration": 10,
      "resolution": "720p"
    }
  }'

Response

Success (200)

{
  "success": true,
  "data": {
    "id": "task_abc123xyz",
    "model": "seedance-2-0-fast-text-to-video",
    "status": "pending",
    "creditsUsed": 80,
    "creditsRemaining": 920,
    "createdAt": "2026-04-04T12:00:00Z"
  }
}

Poll for completion using Tasks API.

Task Complete

{
  "taskId": "task_abc123xyz",
  "status": "completed",
  "output": {
    "url": "https://cdn.vicsee.com/outputs/video_xyz.mp4",
    "duration": 4,
    "format": "mp4",
    "hasAudio": true
  }
}

Seedance 2.0 - Higher quality, same capabilities, for final renders
Seedance 1.5 Pro - Up to 1080p, multilingual audio, no reference mode
Seedance 1.0 - Budget video generation without audio

Seedance 2.0 Fast

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