Seedance 1 Pro Fast

Video generationNewAvailable
by ByteDanceModel ID: seedance-1-pro-fast

A faster and cheaper version of Seedance 1 Pro

Price
$0.072/s
Aspect ratios
16:9, 4:3, 1:1, 3:4, 9:16, 21:9, 9:21
Duration
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 s
Input โ†’ output
Text + Image โ†’ Video
Developer
ByteDance
Updated
September 24, 2026
01

Playground

Try Seedance 1 Pro Fast

Input & output

$0.072/s
Try Seedance 1 Pro Fast
Output
Your video appears here.

This run

$0.36 ยท 36 credits

Billed: 5 s

For accounts without a purchase: runs above 2 credits need a top-up.

New here?

10 free credits ($0.10) when you sign up with Google

Usable 24 hours after sign-up, up to 5 runs per day and at most 2 credits per run. Other sign-in methods start without credits.

02

Examples

Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.
  • Prompt

    high speed supercar driving on the beach at sunset

    Length: 0:05

    Settings

    aspect_ratio
    16:9
    resolution
    1080p
    duration
    5
    fps
    24
  • Prompt

    high speed supercar driving on the beach at sunset

    Length: 0:05

    Settings

    aspect_ratio
    16:9
    resolution
    720p
    duration
    5
    fps
    24
  • Prompt

    a tiger walks through a bamboo forest

    Length: 0:05

    Settings

    aspect_ratio
    16:9
    resolution
    480p
    duration
    5
    fps
    24
03

About Seedance 1 Pro Fast

TL;DRAs of September 24, 2026

Seedance 1 Pro Fast is a model by ByteDance in the Video generation category. On Railwail, Seedance 1 Pro Fast costs $0.072 per second of video. Depending on the settings, the price ranges from $0.018/s to $0.072/s. A default run of 5 seconds costs $0.36. Supported aspect ratios: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, and 9:21. Possible lengths: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 s.

04

Pricing

Prices in US dollars. Usage is charged from prepaid credits.
resolution: 480p$0.018 per second of video
resolution: 720p$0.030 per second of video
resolution: 1080pDefault$0.072 per second of video
Default run (5 s)$0.36 per run
  • 1 credit = $0.01

Cost calculator

Price calculator

Variant
s

Total

$36.00

3,600 credits

Per run

$0.36 ยท 36 credits

billed as 5 s

Fixed price per run, known before the run starts.

05

API

Call Seedance 1 Pro Fast with your Railwail API key. Use this model ID in the request:
curl https://railwail.com/api/v1/videos/generations \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-1-pro-fast",
    "prompt": "A slow drone shot over a misty pine forest at sunrise"
  }'

# Response: {"job_id": "...", "status": "queued", ...}
# Poll until status is completed, failed or cancelled:
curl https://railwail.com/api/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $RAILWAIL_API_KEY"
Set your key as RAILWAIL_API_KEYCreate API key

Videos run asynchronously: the first call returns a job_id; query /api/v1/jobs/JOB_ID until the status is completed.

06

Specifications

Model ID
seedance-1-pro-fast
Developer
ByteDance
Input
Text, Image
Output
Video
Aspect ratios
16:9, 4:3, 1:1, 3:4, 9:16, 21:9, 9:21
Duration
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12 s
Billing
Fixed price, known before the run
Catalog entry updated
September 24, 2026

Input parameters

Inputs and settings from the model's input schema. The example in the API section shows which of them the API accepts.

  • promptrequired
    Type: Text
    Default: โ€“
    Allowed values: โ€“
  • duration
    Type: Choice
    Default: 5
    Allowed values: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12
  • start_image
    Type: Image
    Default: โ€“
    Allowed values: โ€“
  • aspect_ratio
    Type: Choice
    Default: โ€“
    Allowed values: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, or 9:21

Tags

  • replicate
  • bytedance
  • text-to-video
07

Use cases

08

Frequently asked questions

What is Seedance 1 Pro Fast?

Seedance 1 Pro Fast is a model by ByteDance in the Video generation category. On Railwail you can call it with an API key through the Railwail API.

How much does Seedance 1 Pro Fast cost on Railwail?

On Railwail, Seedance 1 Pro Fast costs $0.072 per second of video. Depending on the settings, the price ranges from $0.018/s to $0.072/s. A default run of 5 seconds costs $0.36. The price is known before the run starts. Usage is paid from prepaid credits; 1 credit equals $0.01.

Which settings does Seedance 1 Pro Fast support?

According to its input schema, Seedance 1 Pro Fast knows these parameters: prompt, duration (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12), start_image, and aspect_ratio (16:9, 4:3, 1:1, 3:4, 9:16, 21:9, or 9:21).

How fast is Seedance 1 Pro Fast?

There are not enough measured runs of Seedance 1 Pro Fast on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.

Is Seedance 1 Pro Fast better than Google Veo 3.1?

That depends on the task. Seedance 1 Pro Fast (ByteDance) and Google Veo 3.1 (Google DeepMind) are both models in the Video generation category. The comparison page shows their prices and specifications side by side.

Compare Seedance 1 Pro Fast and Google Veo 3.1

Can Seedance 1 Pro Fast use an image as input?

Yes. Send the image in the start_image parameter.

How do I use Seedance 1 Pro Fast through the API?

Create a Railwail API key and send your request with the model ID seedance-1-pro-fast. Code examples for curl, Python and JavaScript are in the API section of this page.

09

Comparable models

All in this category

Use Seedance 1 Pro Fast via the API

One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = $0.01.