ByteDance

ByteDance

Available via APIVideo Generation

Seedance Pro Fast API

Generate silent 5 or 10 second videos at up to 1080p from text or a single first frame with ByteDance Seedance 1.0 Pro Fast, built for fast, low-cost iteration.

Model ID
seedance-pro-fast
Starts at
$0.01/second
Free trial
$0.20 in credits
View API Documentation

New accounts start with $0.20 in free credits, about 20 seconds of video at the starting price.

Compare all Seedance API versions

Seedance Pro Fast is developed by ByteDance. Wizzx provides API access to it and does not own the model. All trademarks belong to their respective owners.

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$0.01 per second · 10 credits

Sign in to run it. New accounts get $0.20 in free credits.

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Model Guide

About Seedance Pro Fast

Generate silent 5 or 10 second videos at up to 1080p from text or a single first frame with ByteDance Seedance 1.0 Pro Fast, built for fast, low-cost iteration.

Why choose Seedance Pro Fast?

Seedance Pro Fast is listed by ByteDance as Seedance 1.0 Pro Fast. BytePlus ModelArk describes it as a full-scale model that keeps the core strengths of Seedance 1.0 Pro, including 1080p output with smooth motion and cinematic aesthetics, while generating up to 3 times faster than 1.0 Pro at a lower price. It is aimed at the balance of quality, speed, and cost.

In Wizzx, Pro Fast is the option for picture-only work at higher resolution: it is the only Seedance model here with a 1080p tier. It does not generate audio and animates from a single first frame. If you need dialogue, sound, or a fixed end frame, use Seedance 1.5 Pro instead.

Wizzx controlCurrent behavior
PromptRequired
ModeText to video (default), or image to video with 1 first frame
Duration5 (default) or 10 seconds
Resolution480p (default), 720p, or 1080p
Aspect ratio16:9 (default), 4:3, 1:1, 3:4, 9:16, 21:9, or adaptive
Fixed cameraOptional, off by default
WatermarkOptional, off by default
SeedOptional, -1 (default) for random, up to 4294967295
AudioNot available; output is silent

Suitable workflows

  • Rapid exploration of motion, framing, and camera ideas at 480p before choosing a final take.
  • Animating an existing product photo, illustration, or key visual from its first frame.
  • 1080p B-roll, backgrounds, and product shots where music or voice-over is added later in editing.
  • Storyboards, previs, and pitch videos where many variations matter more than sound.
  • Locked-off shots, such as product turntables or cinemagraph-style loops, using Fixed camera.

Prompting approach

Organize the prompt as subject, action, environment, camera, lighting, and pacing. BytePlus notes that Seedance 1.0 Pro responds to camera terms such as tracking shot, pan, and truck left or right, and that several moves can be combined into one longer shot. It also supports scene switches within one prompt; mark them explicitly, for example "camera switch", and keep the subject and style consistent across them. For image to video, describe what should move and how, not what the image already shows. Use an input image close to the target aspect ratio, since mismatched images are cropped to the nearest supported ratio. Since the output is silent, leave sound out of the prompt.

Wizzx scope

Wizzx returns one MP4 video per request. Resolution selects the per-second rate and duration sets the total; see the live price section on this page. Image to video accepts exactly one image, used as the first frame.

Upstream, ModelArk lists durations from 2 to 12 seconds and a return-last-frame option for Seedance 1.0 Pro Fast. Wizzx currently exposes only 5 and 10 seconds and does not expose last-frame return. First and last frame input, audio generation, and reference images, video, or audio are not supported by this model upstream.

Source

Backend pricing

Seedance Pro Fast API pricing

Model identity, billing unit and every price tier below are read from the backend catalog.

480p

10

credits / second

= $0.01 USD / second

Official: $0.015−33%

resolution
480p

720p

20

credits / second

= $0.02 USD / second

Official: $0.025−20%

resolution
720p

1080p

50

credits / second

= $0.05 USD / second

Official: $0.06−17%

resolution
1080p

Seedance Pro Fast API vs official pricing

TierOfficial fromWizzxSavings
480p$0.015$0.01−33%
720p$0.025$0.02−20%
1080p$0.06$0.05−17%

1 credit = $0.001 USD. The final deduction returned by the API is authoritative.

Back to all models

Integrate the Seedance Pro Fast API

Every request is asynchronous: submit the task, keep the task ID, then poll for the result. The body below uses the model's default settings.

  1. 1

    Get a Seedance Pro Fast API key

    Sign in and create a key in the dashboard. Set WIZZX_API_KEY in your server environment; never expose it in browser code.

  2. 2

    Submit a task

    Send a POST request to the model endpoint. A successful submission returns data.task_id; keep that ID before polling. Submission is not generation completion.

  3. 3

    Retrieve the result

    Replace YOUR_TASK_ID with the returned ID and query /api/v1/task/status. Wait for SUCCEEDED and read the output URLs. Stop on FAILED or REVIEW_REQUIRED; do not automatically resubmit an uncertain task.

Submit a tasksubmit.sh
curl -X POST \
  https://api.wizzx.ai/api/v1/task/submit/seedance-pro-fast \
  -H "Authorization: Bearer $WIZZX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "type": "text-to-video",
  "duration": 5,
  "resolution": "480p",
  "aspect_ratio": "16:9",
  "camera_fixed": false,
  "watermark": false,
  "seed": -1,
  "prompt": "A slow aerial push-in over a coastal cliff road at golden hour, cinematic motion"
}'
Retrieve the resultstatus.sh
curl -X POST \
  https://api.wizzx.ai/api/v1/task/status \
  -H "Authorization: Bearer $WIZZX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "task_id": "YOUR_TASK_ID"
}'

Seedance Pro Fast API parameters

The fields this endpoint accepts on Wizzx, read from the same schema as the Playground form.

ParameterTypeDefaultAllowed valuesDescription
prompt
Promptrequired
string——Describe the video you want to generate
type
Generation Typerequired
stringtext-to-videotext-to-video · image-to-video—
image_urls
Input Image
url[] ≤ 1——Required in Image to video mode. Add 1 image.
duration
Duration
integer55 · 10Video duration in seconds
resolution
Resolution
string480p480p · 720p · 1080pHigher resolutions use a higher per-second rate.
aspect_ratio
Aspect Ratio
string16:916:9 · 4:3 · 1:1 · 3:4 · 9:16 · 21:9 · adaptive—
camera_fixed
Fixed Camera
booleanfalse—Keep camera stationary during generation
watermark
Watermark
booleanfalse——
seed
Seed
integer-1-1 – 4294967295Random seed for reproducibility (-1 for random)

API integration questions

How much does the Seedance Pro Fast API cost?
On Wizzx the Seedance Pro Fast API starts at $0.01/second (10 credits). Each tier above lists its parameters and billing unit, and failed tasks are refunded.
What is the Seedance Pro Fast API model ID?
seedance-pro-fast. Submit tasks to POST /api/v1/task/submit/seedance-pro-fast with your API key.
Am I charged if a task fails?
No. Credits are reserved when you submit a task and refunded if it fails. You are only charged for successful tasks.
Can I try the Seedance Pro Fast API for free?
Yes. New accounts start with $0.20 in free credits, about 20 seconds of video at the starting price.
Is this the official Seedance Pro Fast API?
No. Seedance Pro Fast models are developed by ByteDance. Wizzx is an independent API platform that gives you access to them with one API key, an asynchronous task API and pay-as-you-go credits.
Does the submit response contain the generated file?
Generation is asynchronous. The submit response identifies the task. Query its status until it finishes, then use the output URLs in the result. See the API reference for response fields and error handling.

Wizzx API

Start building with the Seedance Pro Fast API

New accounts get $0.20 in free credits. Pay as you go with no subscription, and failed tasks are refunded.