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Seedance 1.0 Pro Fast

Released 2025-10

videoVision

Seedance 1.0 Pro Fast is the fastest, lowest-priced entry in the Seedance video line on BytePlus ModelArk, generating silent video from text prompts or a single first-frame image.

Input
text image
Output
video $1/M

Price in context

Where the price sits among 5 comparable models

Output$1/M
$1 · Seedance 1.0 Pro Fast Dreamina Seedance 2.0 · $7

The bar shows how this model’s price compares with every other model of the same kind on Synthorai. The cheapest and the most expensive are named at each end. These are base rates; batch, region and cache-write discounts are on the pricing page.

Specs & limits

Video

Resolution 480p / 720p / 1080p A fixed set of options, not a range.
Clip length 2-12 s A continuous range, not a fixed set.
Frame rate 24 fps
Aspect ratios 6 (incl. 16:9, 9:16, 1:1)
Video inputs text-to-video · first-frame image-to-video (no last-frame)
Format .mp4

Model

Modalities text + image → video
  • Fastest, lowest-price Seedance tier (silent output only): text-to-video + first-frame image-to-video (no last-frame input) at 480p/720p/1080p, 24 fps, 2-12 s, six aspect ratios, .mp4
  • version date 251015 encoded in the model id

per ByteDance official docs ↗

Use Seedance 1.0 Pro Fast in 30 seconds

Asynchronous job API: create a task and poll it, or hold the request open with Prefer: wait. POST /v1/videos

import time

import requests

BASE = "https://synthorai.io/v1"
HEADERS = {"Authorization": "Bearer sk-syn-..."}

# 1) create the video generation job (POST /v1/videos)
task = requests.post(
    f"{BASE}/videos",
    headers=HEADERS,
    json={
        "model": "seedance-1-0-pro-fast-251015",
        "prompt": "a watercolor lighthouse at dawn, waves rolling in, camera pulling back",
        "resolution": "720p",
        "duration": 5,
    },
).json()

# 2) poll the job until it reaches a terminal state
while task["status"] in ("queued", "in_progress"):
    time.sleep(5)
    task = requests.get(f"{BASE}/videos/{task['id']}", headers=HEADERS).json()

# 3) completed → signed video URL (valid ~24h - download and store it promptly)
if task["status"] == "completed":
    print(task["data"][0]["url"])
else:
    print(task["error"])

About Seedance 1.0 Pro Fast

  • BytePlus describes it as a full-scale model delivering top performance at low cost, with generation up to three times faster than Seedance 1.0 Pro.
  • It produces .mp4 clips at 480p, 720p, or 1080p, 24 fps, across six aspect ratios, with durations from 2 to 12 seconds, the shortest minimum in the family, handy for quick loops, previews, and high-volume pipelines.
  • As a 1.0-generation model it omits audio generation, last-frame input, multimodal reference, video editing, and extension, trading features for throughput; it does keep camera_fixed for locking the camera, which the 2.0 series drops, and it is the only Seedance model exposing a frames parameter for finer duration control, where frames wins if both are set.
  • Two defaults to check: resolution defaults to 1080p, the most expensive tier, and the adaptive aspect ratio is not accepted for text-to-video.
  • Returning the last frame lets you chain clips into something longer, since native extension is a 2.0 feature.
  • On Synthorai it answers on the same asynchronous /v1/videos job API as the rest of the video lineup: create a task and poll it, or use Prefer: wait for short jobs.

FAQ

Is the Seedance 1.0 Pro Fast API free to try?

Yes: new accounts get 10 trial calls and up to $1 in free credit, no card required. That's enough to try Seedance 1.0 Pro Fast against your real workload before adding a payment method.

What is Seedance 1.0 Pro Fast best at?

Lowest per-token rate in the family; silent text- and image-to-video; 2-12 second durations up to 1080p. See the About section for the full picture from the vendor's own release notes.

How much does Seedance 1.0 Pro Fast cost?

Seedance 1.0 Pro Fast costs $1 per million video tokens on Synthorai (video tokens ≈ width × height × 24fps × seconds ÷ 1024). Only successful generations are billed: pay-as-you-go, no platform markup, no subscription.

How do I generate videos with the Seedance 1.0 Pro Fast API?

POST to /v1/videos on Synthorai with model="seedance-1-0-pro-fast-251015" to create an asynchronous job, then poll the task (or hold the request open with a Prefer: wait header) until the video URL is ready. No vendor SDK is needed.

How do I get access to Seedance 1.0 Pro Fast?

Point your existing OpenAI SDK at base_url="https://synthorai.io/v1", set model="seedance-1-0-pro-fast-251015", and you're done. One API key covers every model on the gateway.

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Every value on this page is transcribed from the vendor's own documentation, linked above, and carries the date it was checked. Prices are compared across the catalogue; specification values that vendors define differently are shown with the difference stated rather than charted. Nothing here is measured by us, and nothing is scored.

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