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Seedance 2.0 Gateway Service: Pricing, Models, and Video Generation Guide

Seedance 2.0
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Seedance 2.0 Gateway Service pricing, models, text-to-video, image-to-video, and reference-to-video in one unified guide.

View Seedance 2.0 Pricing · Get API Key · Read API Docs

What Is Seedance 2.0 Gateway Service?

Seedance 2.0 Gateway Service is a video generation gateway service for creating AI videos from text prompts, images, and multimodal references. Through EvoLink.ai, developers can access the full Seedance 2.0 model family with one consistent API workflow:

• create a generation task
• receive a task ID immediately
• poll task status or receive a callback
• download the generated video result

This repository is designed for developers who want to:

• understand Seedance 2.0 Gateway Service pricing and model differences
• rank for searches like Seedance 2.0 API, Seedance 2 API price, and Seedance API pricing
• compare text-to-video, image-to-video, and reference-to-video modes
• understand the difference between standard and fast models
• copy production-ready request examples
• estimate pricing before shipping
• discover related Seedance resources across the EvoLinkAI GitHub ecosystem

Supported Seedance 2.0 Models

Standard models

• seedance-2.0-text-to-video
• seedance-2.0-image-to-video
• seedance-2.0-reference-to-video

Fast models

• seedance-2.0-fast-text-to-video
• seedance-2.0-fast-image-to-video
• seedance-2.0-fast-reference-to-video

Quick Start

Create a Seedance 2.0 video task with a single API call:

curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2.0-text-to-video",
    "prompt": "A cinematic aerial shot of a futuristic city at sunrise, soft clouds, reflective skyscrapers, smooth camera motion",
    "duration": 5,
    "quality": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true
  }'

Example response:

{
  "id": "task-unified-1774857405-abc123",
  "model": "seedance-2.0-text-to-video",
  "object": "video.generation.task",
  "status": "pending",
  "progress": 0,
  "type": "video"
}

Unified API Workflow

All Seedance 2.0 models use the same task-based workflow.

1. Create a generation task

POST https://api.evolink.ai/v1/videos/generations

2. Query task status

GET https://api.evolink.ai/v1/tasks/{task_id}

3. Retrieve results

When the task is completed, the response returns generated video URLs in the result payload.

4. Optional callback

You can pass callback_url in the create request if you want asynchronous notifications instead of polling only.

Model Comparison

Model	Input Type	Best For	Notes
seedance-2.0-text-to-video	text only	prompt-first video generation	supports optional web search
seedance-2.0-image-to-video	1-2 images	first-frame or first/last-frame animation	ideal for image animation workflows
seedance-2.0-reference-to-video	images, videos, audio, text	advanced multimodal generation and editing	best for editing, extension, and guided generation
seedance-2.0-fast-text-to-video	text only	faster prompt-based generation	same basic workflow as standard text model
seedance-2.0-fast-image-to-video	1-2 images	faster image animation	supports more image formats than the standard image model
seedance-2.0-fast-reference-to-video	images, videos, audio, text	faster multimodal generation	strong default for quick iteration

Core Request Parameters

Parameter	Type	Description
model	string	selects the Seedance 2.0 model
prompt	string	generation prompt, supported across all model families
duration	integer	output video duration, 4-15 seconds or -1 for smart duration
quality	string	480p or 720p
aspect_ratio	string	16:9, 9:16, 1:1, 4:3, 3:4, 21:9, or adaptive
generate_audio	boolean	whether synchronized audio should be generated
callback_url	string	optional HTTPS callback URL

Mode-by-Mode Guide

Text to Video

Use seedance-2.0-text-to-video or seedance-2.0-fast-text-to-video when you want to generate a video from prompt text only.

Key points:

• no image, video, or audio inputs
• supports optional model_params.web_search
• good for concept generation and trend-aware prompts

Docs:

• Text-to-Video Guide

Image to Video

Use seedance-2.0-image-to-video or seedance-2.0-fast-image-to-video when you want to animate one or two images.

Key points:

• image_urls accepts 1-2 images
• 1 image = first-frame animation
• 2 images = first-frame to last-frame transition
• useful for marketing, product visuals, social posts, and stylized motion clips

Docs:

• Image-to-Video Guide

Reference to Video

Use seedance-2.0-reference-to-video or seedance-2.0-fast-reference-to-video for the most control.

Key points:

• supports image_urls, video_urls, and audio_urls
• can create new outputs from multimodal references
• can extend, edit, or recompose videos
• input reference videos affect billing

Docs:

• Reference-to-Video Guide
• Fast Models Guide

Seedance 2.0 Gateway Service Pricing

Output pricing

For text-to-video and image-to-video tasks, pricing is based on output duration:

cost = output video duration in seconds × resolution price

Resolution	Price
480p	4.63 credits / second
720p	10.00 credits / second

Reference video pricing

For reference-to-video tasks, input reference video duration is also billed:

cost = (input reference video duration + output video duration) × resolution price

Extra notes

• audio generation has no extra charge
• web_search costs 0.04 credits per actual search call
• smart duration (-1) reserves 10 seconds first, then settles by actual output length
• 1 credit = 10,000 UC = ¥0.10

Detailed breakdown:

• Pricing Guide

Example Requests

Text-to-video example

curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2.0-text-to-video",
    "prompt": "A macro shot of a glass frog on a green leaf, focus shifting to its transparent body and visible beating heart",
    "duration": 8,
    "quality": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true
  }'

Image-to-video example

curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2.0-image-to-video",
    "prompt": "The camera slowly pushes in as the still image comes alive",
    "image_urls": ["https://example.com/first-frame.jpg"],
    "duration": 5,
    "aspect_ratio": "adaptive"
  }'

Reference-to-video example

curl --request POST \
  --url https://api.evolink.ai/v1/videos/generations \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedance-2.0-reference-to-video",
    "prompt": "Use video 1 camera movement throughout the clip and audio 1 as background music",
    "image_urls": ["https://example.com/ref1.jpg"],
    "video_urls": ["https://example.com/reference.mp4"],
    "audio_urls": ["https://example.com/bgm.mp3"],
    "duration": 10,
    "quality": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true
  }'

More code:

• curl examples
• Node.js examples
• Python examples

Python Example

import requests
import time

headers = {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
}

create_resp = requests.post(
    "https://api.evolink.ai/v1/videos/generations",
    headers=headers,
    json={
        "model": "seedance-2.0-text-to-video",
        "prompt": "A cinematic drone shot above snowy mountains at sunrise",
        "duration": 5,
        "quality": "720p",
        "aspect_ratio": "16:9"
    }
).json()

task_id = create_resp["id"]

while True:
    task = requests.get(
        f"https://api.evolink.ai/v1/tasks/{task_id}",
        headers={"Authorization": "Bearer YOUR_API_KEY"}
    ).json()

    if task.get("status") == "completed":
        print(task)
        break
    elif task.get("status") == "failed":
        print(task)
        break

    time.sleep(3)

JavaScript Example

const createResp = await fetch("https://api.evolink.ai/v1/videos/generations", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.EVOLINK_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    model: "seedance-2.0-fast-text-to-video",
    prompt: "A neon-lit cyberpunk alley in the rain, cinematic camera movement",
    duration: 5,
    quality: "720p",
    aspect_ratio: "16:9",
    generate_audio: true
  })
});

const task = await createResp.json();
console.log(task);

Best Use Cases

Seedance 2.0 Gateway Service is well suited for:

• AI video generation apps
• creative tooling and editor workflows
• image animation pipelines
• video ad generation
• social media content creation
• product demo generation
• multimodal video editing workflows
• prototype filmmaking and concept visualization

FAQ

Is Seedance 2.0 Gateway Service synchronous?

No. Seedance 2.0 generation is asynchronous. You create a task first, then query task status later or use a callback URL.

What is the difference between standard and fast models?

Fast models follow the same request pattern but are positioned for quicker iteration. You should compare them by workflow needs, latency expectations, and output preference.

Can I generate video from only text?

Yes. Use seedance-2.0-text-to-video or seedance-2.0-fast-text-to-video.

Can I animate one image or create a start/end frame transition?

Yes. Use image-to-video. One image becomes the first frame. Two images become first and last frames.

Can I edit or extend an existing video?

Yes. Use reference-to-video with video_urls and a guiding prompt.

Does reference input affect billing?

Yes. Reference video duration is included in billing for reference-to-video tasks.

How long are result URLs valid?

Generated video URLs are valid for 24 hours. Save them promptly.

Repository Structure

seedance-2-api/
├── README.md
├── assets/
│   └── banner.jpg
├── docs/
│   ├── text-to-video.md
│   ├── image-to-video.md
│   ├── reference-to-video.md
│   ├── fast-models.md
│   └── pricing.md
└── examples/
    ├── curl/
    ├── nodejs/
    └── python/

Documentation

• Text-to-Video Guide
• Image-to-Video Guide
• Reference-to-Video Guide
• Fast Models Guide
• Pricing

These docs now cover both standard and fast variants for text-to-video, image-to-video, and reference-to-video.

Related Seedance Repositories

• Seedance 2.0 Gateway Service: Price and Guide — this repository
• Seedance 2 Video Gen Skill for OpenClaw — OpenClaw skill integration for Seedance workflows
• Awesome Seedance 2 Guide — broader Seedance ecosystem guide and discovery entry

Related Links

• Seedance 2.0 Pricing
• Get API Key
• EvoLink.ai

Please review Regional Availability before integration.

License

MIT

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Now Available: You can integrate against the docs today. Once Seedance Gateway Service opens up, we’ll notify early-access users.