Seedance 2.0 Fast API

Seedance 2.0 with quicker, lower-cost renders.

4 to 15 second clips
A last-frame image needs a first-frame image. Reference audio needs an image to go with it.

Pricing
Resolution	Text or images	With video input
480p	Text or images13.4 Credits/s ($0.067/s)40% less than fal fal price $0.113 per second	With video input8 Credits/s ($0.04/s)
720p	Text or images29 Credits/s ($0.145/s)40% less than fal fal price $0.242 per second	With video input17.4 Credits/s ($0.087/s)

With video input, both the input and output seconds are billed.

Full pricing ↓All Seedance models

Prompt

Add a first frame before a last frame.

Audio needs at least one image.

Resolution

Duration in seconds

Between 4 and 15 seconds, or turn on Auto.

Auto

The model picks the length, up to 15 s. You pay for the length it makes.

Aspect ratio

Auto matches the shape of your input media.

Generate audio

Adds a synchronized soundtrack.

Advanced

Watermark

Execution expires after

Seed

The same seed and settings give a similar result. Leave it empty for a random seed.

Return last frame

Also returns the last frame of the video as an image.

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Your result appears here

Pricing

Prices as of 2026-11-09

Tier	Price
480p	13.4 Credits/s ($0.067/s)^{Note 11}4–15 s
720p	29 Credits/s ($0.145/s)^{Note 11}4–15 s
480p with video input 480p-video	8 Credits/s ($0.04/s)^{Notes 2, 32, 3}4–15 s
720p with video input 720p-video	17.4 Credits/s ($0.087/s)^{Notes 2, 32, 3}4–15 s

Holds Credits for up to 15 seconds and charges the actual length.
The rate applies to input and output seconds.
Holds Credits for up to 15 seconds of output plus up to 15 seconds of input, and charges the actual length.

1 Credit ≈ $0.005. At the standard pack price. Larger packs include bonus Credits, so each Credit costs less.

For 720p, fal charges $0.242/s; VizoAPI charges $0.145/s, 40% less.

Delivery and billing

Output: Finished files are listed in the task result with an asset ID and type for each.
Download: Files are kept for 7 days and downloaded through short-lived signed links. You can delete them any time.
Billing: Credits are held when a task is accepted and charged on delivery. If generation fails, or nothing is delivered within 24 hours, the held Credits are released in full.
Notifications: Poll the task by ID, or use signed webhooks and deduplicate by event_id.

How is it billed?

By output second.

Do failed generations cost anything?

No. If generation fails, or nothing is delivered within 24 hours of acceptance, the held Credits are released in full.

API reference

Create the task once, then poll it by its ID. Full script with upload and download · API reference

Request

API=https://api.vizoapi.com/v1
AUTH="Authorization: Bearer $VIZO_API_KEY"

# Create the task once and keep its ID.
ID=$(curl -fsS $API/generations -H "$AUTH" -H "Content-Type: application/json" \
  -d '{
  "model": "seedance-2-0-fast",
  "input": {
    "content": [
      {
        "type": "text",
        "text": "A slow dolly shot through a rainy neon street"
      }
    ],
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 5
  },
  "metadata": {
    "client_reference": "my-unique-reference-1"
  }
}' | jq -r .id)

# Poll until the task closes, then read its status and result.
until curl -fsS $API/generations/$ID -H "$AUTH" | jq -e '.closed_at != null' > /dev/null; do sleep 5; done
curl -fsS $API/generations/$ID -H "$AUTH" | jq '{status, result}'

All fields

Send these fields in input. A field the table does not list is refused with HTTP 422 invalid_input.

content needs at least one text, image or video item.
Every image, video and audio item in content names its role.
Input limits: up to 9 images, 3 videos and 3 audio items in content, with no limit on the total. Each video and audio item runs 2 to 15 seconds. Videos add up to at most 15 seconds, and audio to at most 15 seconds. Lengths are checked before the task is created when the file can be measured (422 input_duration_out_of_range). Task type and drafts are not supported.
Image pixel size and aspect ratio, and video resolution and frame rate, are not checked when the request is made: the model checks them when the task runs, and a file it refuses usually fails the task with input_media_invalid (otherwise generation_failed); the task is not charged.
first_frame and last_frame images (at most one each) cannot be combined with reference images, videos or audio, and a last_frame needs a first_frame.
Audio items need at least one image or video in content.
Prompt text must not contain inline --flag parameters.

Request parameters
Field	Description
`bitrate_mode`stringOptional	Encoding quality. Only standard. Only `standard`
`content`array of objectsRequired	Prompt text and media items. Each image, video and audio item names its role. At least 1 items
`content[].type`stringRequired	Item kind. Allowed values`textimage_urlvideo_urlaudio_url`
Items where `type` is `text`
`content[].text`stringRequired	Prompt text, up to 4000 characters per item. At most 4000 characters
Items where `type` is `image_url`
`content[].image_url`objectRequired
`content[].image_url.url`stringRequired	An https URL or an uploaded asset id (ast_...). At most 4000 characters · Pattern`^(https://\|ast_)`
`content[].role`stringRequired	Image roles: first_frame, last_frame, reference_image. Video: reference_video. Audio: reference_audio.
Items where `type` is `video_url`
`content[].role`stringRequired	Image roles: first_frame, last_frame, reference_image. Video: reference_video. Audio: reference_audio.
`content[].video_url`objectRequired
`content[].video_url.url`stringRequired	An https URL or an uploaded asset id (ast_...). At most 4000 characters · Pattern`^(https://\|ast_)`
Items where `type` is `audio_url`
`content[].audio_url`objectRequired
`content[].audio_url.url`stringRequired	An https URL or an uploaded asset id (ast_...). At most 4000 characters · Pattern`^(https://\|ast_)`
`content[].role`stringRequired	Image roles: first_frame, last_frame, reference_image. Video: reference_video. Audio: reference_audio.
`duration`integerOptional	Output length in seconds, 4 to 15, or -1 to let the model choose. Defaults to 5. Default `5` 4 to 15, or `-1`
`execution_expires_after`integerOptional	Execution and delivery deadline in seconds from acceptance. Defaults to 86400. Credits remain held until completion or this deadline. Default `86400` Minimum 3600 · Maximum 259,200
`generate_audio`booleanOptional	Adds a synchronized soundtrack. Defaults to true. Default `true`
`output_format`stringOptional	Container format. Only mp4. Only `mp4`
`ratio`stringOptional	Output aspect ratio. Defaults to adaptive. Allowed values`16:94:31:13:49:1621:9adaptive` Default `adaptive`
`resolution`stringOptional	Output resolution. Defaults to 720p. Allowed values`480p720p` Default `720p`
`return_last_frame`booleanOptional	Also returns the last frame of the video as an image.
`seed`integerOptional	Random seed. -1 or omitted picks one at random. Minimum -1 · Maximum 4,294,967,295
`watermark`booleanOptional	Add a visible watermark. Defaults to false; the tier price is unchanged. Default `false`

Full example request and response

A complete create request, the 202 answer and the task once it has succeeded. This input selects the 720p tier at 29 Credits per second. For 5 seconds the API holds 145.000 Credits.

Request

{
  "model": "seedance-2-0-fast",
  "input": {
    "content": [
      {
        "type": "text",
        "text": "A paper boat drifting on a pond at dawn, slow dolly in"
      }
    ],
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 5
  },
  "metadata": {
    "client_reference": "my-unique-reference-1"
  }
}

202 Accepted

{
  "id": "gen_01JD8Z5QW3XR",
  "model": "seedance-2-0-fast",
  "source": "api",
  "created_at": "2026-11-08T09:00:00Z",
  "customer_resolution_deadline": "2026-11-09T09:00:00Z",
  "late_result_available": false,
  "metadata": {
    "client_reference": "my-unique-reference-1"
  },
  "status": "processing",
  "execution_status": "processing",
  "delivery_status": "pending",
  "billing_status": "pending",
  "version": 1,
  "price": {
    "unit": "credit",
    "estimated": "145.000",
    "reserved": "0.000",
    "charged": "0.000",
    "refunded": "0.000"
  },
  "allowed_actions": [],
  "closed_at": null,
  "error": null,
  "result": null
}

200 Succeeded

{
  "id": "gen_01JD8Z5QW3XR",
  "model": "seedance-2-0-fast",
  "source": "api",
  "created_at": "2026-11-08T09:00:00Z",
  "customer_resolution_deadline": "2026-11-09T09:00:00Z",
  "late_result_available": false,
  "metadata": {
    "client_reference": "my-unique-reference-1"
  },
  "status": "succeeded",
  "execution_status": "succeeded",
  "delivery_status": "ready",
  "billing_status": "settled",
  "version": 4,
  "price": {
    "unit": "credit",
    "estimated": "145.000",
    "reserved": "0.000",
    "charged": "145.000",
    "refunded": "0.000"
  },
  "allowed_actions": [],
  "closed_at": "2026-11-08T09:01:31Z",
  "error": null,
  "result": {
    "asset_id": "ast_01JD8Z9M2C4V",
    "outputs": [
      {
        "index": 0,
        "asset_id": "ast_01JD8Z9M2C4V",
        "content_type": "video/mp4"
      }
    ]
  }
}

Full API reference for Seedance 2.0 Fast

Pricing

Delivery and billing

API reference

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