Seedance API · Ace Data Cloud

Seedance API
ByteDance AI Video Generation

Access Seedance 1.x, 2.0, and 2.5 through a unified API. Supports text-to-video, image-to-video, full-modal references, video editing, and extension—up to 4k and 30 seconds, with pay-as-you-go pricing.

📄 View Documentation 💰 View Pricing

🎬 9 Models 📹 Up to 4k 🔊 Automatic Audio Generation 🎞️ Generate + Edit + Extend

🎬

Model Versions

📹

Maximum Resolution

💰

$0.007

Starting Price per Second

🔊

Audio

Automatic Voice Generation

Why Choose Seedance?

Seedance 2.5 extends full-modal video capabilities to up to 30 seconds, allowing combinations of image, video, and audio references, while supporting editing or extending existing videos.

Ace Data Cloud provides a unified Seedance REST API covering multiple model versions, asynchronous task polling, and callback notifications, with no need to switch interfaces for different capabilities.

Seedance API Core Features

From text descriptions to high-definition video—Seedance provides comprehensive video generation capabilities

✍️

Text-to-Video (T2V)

Enter a text description to generate high-quality video. Seedance accurately understands motion semantics, with smooth and natural character movements.

🖼️

Image-to-Video (I2V)

Upload a reference image, and the model generates dynamic video based on its content. Perfectly preserves the characters, scenes, and style in the image.

📹

Multi-Resolution Support

Supports 480p, 720p, 1080p, and 4k depending on the model. Flexibly choose between fast previews and high-definition final videos.

🔊

Automatic Audio Generation

Enable the generate_audio option, and Seedance will automatically add matching sound effects and background music to generated videos.

⚡

Asynchronous Task System

Receive a task_id after submitting a video generation request, then retrieve results through polling or callbacks. The polling API is completely free.

🎯

Last Frame Extraction

Enable return_last_frame to obtain the final frame image of a video, making it convenient for continued video generation or previewing.

Python

import requests
# Step 1: Submit video generation task
response = requests.post(
    "https://api.acedata.cloud/seedance/videos",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json"
    },
    json={
        "model": "doubao-seedance-1-5-pro-251215",
        "content": [
            {"type": "text", "text": "A cat playing piano in a cozy room"}
        ],
        "generate_audio": True
    }
)
task_id = response.json()["id"]
# Step 2: Poll for result (free)
result = requests.get(
    f"https://api.acedata.cloud/seedance/tasks/{task_id}",
    headers={"Authorization": "Bearer YOUR_API_KEY"}
)
print(result.json()["data"]["video_url"])

Generate AI Videos in Two Steps

Submit a text description and retrieve video results asynchronously—a clean RESTful API design.

Submit a Generation Request

POST to /seedance/videos, pass text or image content, and receive a task_id

Poll for Results

Query /seedance/tasks with the task_id, then retrieve the video URL once the status is complete

Or Use Callback Notifications

Set callback_url, and a POST notification will be sent to your server when generation is complete

What can Seedance be used for?

From creative short films to commercial ads—Seedance is being used in these scenarios

📱

Short-form Video Content

Quickly generate creative short-form video content for platforms such as TikTok / Douyin / YouTube Shorts

📢

Advertising Assets

Generate product advertising videos in bulk, significantly reducing video production costs and improving ad asset output efficiency

🎓

Education & Training

Automatically convert text lesson plans into animated videos for a more intuitive learning experience

🎮

Games & Animation

Game cutscenes and concept video prototypes—quickly validate ideas and reduce pre-production costs

Get Started in 3 Steps

From registration to generating your first video, it takes only a few minutes

Sign Up and Get an API Key

Create a free account on Ace Data Cloud and generate your Bearer Token from the console.

Submit a Video Generation Request

POST to /seedance/videos, provide a text description or reference image, and choose a model and resolution.

Get Your Video Result

Retrieve the completed video URL through polling or a callback, then download and use it.

View Documentation →

Choose the Right Seedance Model

From quick previews to high-quality final videos—multiple models cover different needs

Recommended

2.5

Latest Flagship

A full-modal video model with up to 30 seconds and 1080p, supporting more reference assets, audio-only references, editing, and extension.

✓ 480p / 720p / 1080p
✓ Up to 30 seconds
✓ Image / video / audio references
✓ Editing and extension

1.0 Pro Fast

Ultra Fast

The fastest and lowest-cost Pro model. Ideal for quick previews and batch generation.

✓ Fastest generation speed
✓ Lowest cost
✓ 480p / 720p / 1080p
✓ Suitable for batch production

1.0 Lite

Lightweight

A lightweight model for specific scenarios, with two variants: T2V (text-to-video) and I2V (image-to-video).

✓ T2V text-to-video
✓ I2V image-to-video
✓ 480p / 720p / 1080p
✓ Mid-range pricing

doubao-seedance-2-5-260628 doubao-seedance-2-0-260128 doubao-seedance-2-0-fast-260128 doubao-seedance-2-0-mini-260615 doubao-seedance-1-5-pro-251215 doubao-seedance-1-0-pro-250528 doubao-seedance-1-0-pro-fast-251015 doubao-seedance-1-0-lite-t2v-250428 doubao-seedance-1-0-lite-i2v-250428

Seedance API Pricing

Billed by video duration (seconds); pricing depends on the model, resolution, and reference materials. USD estimates are calculated based on Seedance's current largest package $13,584 / 142,800 Credits (approximately $0.095126/Credit); final pricing is subject to the real-time pricing page. The polling API is free.

Model	480p	720p	1080p
Seedance 2.5	Approx. $0.113/sec	Approx. $0.243/sec	Approx. $0.605/sec
Seedance 2.5 + Reference Video	Approx. $0.273/sec	Approx. $0.586/sec	Approx. $1.444/sec
Seedance 2.0 Standard	Approx. $0.074/sec	Approx. $0.160/sec	Approx. $0.400/sec
Seedance 2.0 Standard + Reference Video	Approx. $0.182/sec	Approx. $0.391/sec	Approx. $0.973/sec
Seedance 2.0 Fast	Approx. $0.060/sec	Approx. $0.129/sec	—
Seedance 2.0 Fast + Reference Video	Approx. $0.143/sec	Approx. $0.306/sec	—
Seedance 2.0 Mini	Approx. $0.037/sec	Approx. $0.081/sec	—
Seedance 2.0 Mini + Reference Video	Approx. $0.090/sec	Approx. $0.195/sec	—
Seedance 1.5 Pro	Approx. $0.013/sec	Approx. $0.028/sec	Approx. $0.063/sec
Seedance 1.5 Pro + Audio	Approx. $0.026/sec	Approx. $0.056/sec	Approx. $0.126/sec
Seedance 1.0 Pro	Approx. $0.024/sec	Approx. $0.054/sec	Approx. $0.118/sec
Seedance 1.0 Pro Fast	Approx. $0.007/second	Approx. $0.015/second	Approx. $0.033/second
Seedance 1.0 Lite	Approx. $0.016/second	Approx. $0.036/second	Approx. $0.079/second

The task status polling endpoint /seedance/tasks is completely free

View full pricing →

Frequently Asked Questions

Everything you need to know about using the Seedance API

What is Seedance? ▾

Seedance supports generation from text, images, video, and audio references. 2.0 Standard supports up to 4k, while 2.5 supports up to 30 seconds and can edit or extend existing videos.

Does it support image-to-video? ▾

Yes! Include content of the image_url type in the content array to enable image-to-video (I2V). The model preserves character appearance, scene layout, and artistic style from the image while adding natural motion effects.

How long does video generation take? ▾

Generation time depends on the model and resolution. Pro Fast models typically finish within 1-2 minutes, while standard Pro models and high-resolution videos may take 3-5 minutes. We recommend using callback notifications (callback_url) to avoid frequent polling.

Is polling task status charged? ▾

No. The /seedance/tasks endpoint is completely free, and you can poll task status as often as you like until video generation is complete. Charges only apply when submitting a /seedance/videos generation request.

How do I choose a model and resolution? ▾

Choose Seedance 2.5 when you need up to 30 seconds, more reference materials, or editing/extending; choose 2.0 Standard when you need up to 4k; choose 2.0 Fast or Mini for quick previews and batch generation.

How does audio generation work? ▾

Set generate_audio: true in supported 1.5 Pro and 2.x models to include matching sound in the video. Specific charges are subject to the rules displayed on the pricing page by model and resolution.

doubao-seedance-1-0-lite-i2v-250428

Overview

Model facts

Quickstart

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