Video generation playground

Seedance 1.5 Pro Fast API

The quicker, cheaper Seedance 1.5 Pro tier, 720p with native audio.

Seedance 1.5 Pro Fast is a video generation model from ByteDance, available on OttoPort's OpenAI-compatible API as the model ID seedance-1.5-pro-fast at $0.05 / second as of 2026-10-14.

Provider

ByteDance

Price

$0.05 / second

Model ID

seedance-1.5-pro-fast

Type

video generation model

Creative conceptsCampaign assetsDeveloper workflows

Create with Seedance 1.5 Pro Fast

video

Prompt

ExampleSelect to edit

Duration

Your result appears here

Start with the example prompt or make it your own. Your OttoPort account is used securely for generation.

Pricing

Seedance 1.5 Pro Fast API pricing

What OttoPort bills for Seedance 1.5 Pro Fast, and what that works out to per unit. Rates are read from the same catalog the gateway meters against, and were current on 2026-10-14.

Per second	$0.05
5-second clip	$0.25
8-second clip	$0.40
Seconds per $10	200	of generated video

No subscription and no minimum — OttoPort bills prepaid credits against usage. See the full rate card.

Quickstart

Call Seedance 1.5 Pro Fast in three lines

Send "model": "seedance-1.5-pro-fast" to POST https://ottoport.ai/api/v1/videos/generations with an OttoPort key. No ByteDance account, no waitlist, no separate SDK.

curl https://ottoport.ai/api/v1/videos/generations \
  -H "Authorization: Bearer $OTTOPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-1.5-pro-fast",
    "prompt": "cinematic product reveal, slow dolly, black background",
    "duration": 5,
    "aspect_ratio": "16:9"
  }'

import requests

job = requests.post(
    "https://ottoport.ai/api/v1/videos/generations",
    headers={"Authorization": "Bearer " + API_KEY},
    json={
        "model": "seedance-1.5-pro-fast",
        "prompt": "cinematic product reveal, slow dolly, black background",
        "duration": 5,
        "aspect_ratio": "16:9",
    },
).json()

# Video is a job: poll it, or pass webhook_url and be told.
print(job["id"], job["status"])

const res = await fetch("https://ottoport.ai/api/v1/videos/generations", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "seedance-1.5-pro-fast",
    prompt: "cinematic product reveal, slow dolly, black background",
    duration: 5,
    aspect_ratio: "16:9",
  }),
});

// Video is a job: poll it, or pass webhook_url and be told.
const job = await res.json();
console.log(job.id, job.status);

Before you start

1. Create a key at /api-keys.
2. Top up credits — the smallest pack is $25.
3. Paste the request. It returns a job ID; poll it or pass a webhook_url.

Full reference at /docs, or drive it from an agent with the MCP server and CLI.

Reference

Request parameters

The body POST https://ottoport.ai/api/v1/videos/generations accepts for Seedance 1.5 Pro Fast.

Field	Type	Required	Notes
model	string	Yes	Always seedance-1.5-pro-fast for Seedance 1.5 Pro Fast.
prompt	string	Yes	Subject, action, and camera movement.
duration	integer	No	Seconds of output. This is the billed unit.
resolution	string	No	One of: 720p. Tiers above this model's base rate bill at a multiplier.
aspect_ratio	string	No	e.g. 16:9 or 9:16.
image_url	string	No	The first frame, for image-to-video.
last_frame_url	string	No	The closing frame. With image_url, this is first-and-last-frame generation.
webhook_url	string	No	Called when the job settles, so you need not poll.
webhook_secret	string	No	Signs the webhook so you can verify it came from OttoPort.

Comparison

Seedance 1.5 Pro Fast direct vs through OttoPort

Seedance 1.5 Pro Fast is the same model either way — what changes is how many accounts, keys, and integrations you carry to reach it.

	ByteDance direct	Via OttoPort
Accounts and keys	A ByteDance account, plus one more for every other model you add	One OttoPort account and one key for the whole catalog
Request shape	ByteDance's own SDK and response format	OpenAI-compatible — point baseURL at OttoPort and change the model string
Switching models	A new integration per provider	Replace seedance-1.5-pro-fast with any other model ID in the catalog
Billing	A separate invoice and contract per provider	Prepaid credits, no subscription, one usage ledger
Provider outages	Your call fails	Configured backup routes are tried in order on provider failure

Describe the subject and action.

Add a camera movement.

Specify your output format.

FAQ

Seedance 1.5 Pro Fast API questions

Cost, keys, and model IDs for Seedance 1.5 Pro Fast on OttoPort.

How much does the Seedance 1.5 Pro Fast API cost?

On OttoPort, Seedance 1.5 Pro Fast costs $0.05 / second as of 2026-10-14. For scale, 5-second clip: $0.25. Billing is prepaid usage with no subscription and no minimum, and the current rate is always published at ottoport.ai/pricing.

How do I get a Seedance 1.5 Pro Fast API key?

You do not need a ByteDance key. Create an OttoPort account, generate a key at ottoport.ai/api-keys, and send it as "Authorization: Bearer <key>" to POST https://ottoport.ai/api/v1/videos/generations with "model": "seedance-1.5-pro-fast". The same key reaches every other model in the catalog.

What is the model ID for Seedance 1.5 Pro Fast?

The OttoPort model ID for Seedance 1.5 Pro Fast is seedance-1.5-pro-fast. Pass it as the model field on POST https://ottoport.ai/api/v1/videos/generations, or list it programmatically from GET https://ottoport.ai/api/v1/models.

Is Seedance 1.5 Pro Fast generation synchronous?

No. POST https://ottoport.ai/api/v1/videos/generations returns a job ID immediately. Poll GET https://ottoport.ai/api/v1/videos/generations/{id} for status, or pass webhook_url and webhook_secret and OttoPort will call you when the job settles. You are billed per second of output, so a failed job costs nothing.

Do I need a ByteDance account to use Seedance 1.5 Pro Fast?

No. OttoPort connects to ByteDance on your behalf, so one OttoPort account covers Seedance 1.5 Pro Fast and every other model in the catalog — no per-provider contracts, keys, or invoices.

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