Seedance 2.0 Fast API

Create videos with Seedance 2.0 Fast using text, images, video, audio. Available resolutions: 480p / 720p. Try the current API settings, preview results and reuse your inputs.

Modalities

TextImageVideoAudioVideo

Published

480p

$0.03/ second

Platform price · USD

720p

$0.05/ second

Platform price · USD

Input

Generation mode720p · $0.05 / secondPrompt 223 / 7,000

resolutionaspect ratiogenerate audio

Duration4–15 seconds

Request preview

{
  "model": "seedance-2.0-fast",
  "input": {
    "seconds": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true,
    "prompt": "Macro commercial film of an imaginary translucent cobalt perfume bottle on wet black stone. A soft light travels across the glass, condensation slowly forms, and the camera makes one controlled half-orbit. No logos or text."
  }
}

API keySign in to generate

API key for this model

Output

Example output

Open original ↗

Build with this model

The example follows your Playground parameters.

curl --request POST 'https://vip.astralgames.ai/v1/tasks' \
  --header 'Content-Type: application/json' \
  --header "Authorization: Bearer $MODEL_API_KEY" \
  --data '{
  "model": "seedance-2.0-fast",
  "input": {
    "seconds": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true,
    "prompt": "Macro commercial film of an imaginary translucent cobalt perfume bottle on wet black stone. A soft light travels across the glass, condensation slowly forms, and the camera makes one controlled half-orbit. No logos or text."
  }
}'

Set MODEL_API_KEY in your environment. Keep your secret key on the server. Full documentation ↗

Seedance 2.0 Fast pricing

Estimate one request, then choose a budget for your workflow.

SpecificationDuration · seconds

Usage	Quantity	Rate	Cost
480p	5 sec	$0.03/ sec	$0.15

Cost per request$0.15

Public USD estimate. Your account rate and final recorded usage determine the actual charge.

View all specifications and prices

Specification	Our price	Official reference
480p	$0.03 / second	—
720p	$0.05 / second	—

Related models

Video models ↗

Model	Price	Resolution	Input → output
ByteDanceSeedance 2.0 FastCurrent	$0.03 / second	480p / 720p	TextImageVideoAudioVideo
ByteDanceSeedance 2.0Both declare text, image, video, audio inputSame billing units	$0.05 / second	480p / 720p / 1080p	TextImageVideoAudioVideo
KuaishouKling V3 OmniBoth declare text, image, video input	$0 / request	720p / 1080p	TextImageVideoVideo
GoogleGemini Omni FlashBoth declare text, image, video input	$0 / request	720p	TextImageVideoVideo
KuaishouKling V3Both declare text, image input	$0 / request	720p / 1080p	TextImageVideo

See what it can create.

Capability-based prompts and platform-generated examples are labeled separately, with their sources.

Official capability source ↗ · 2026-10-14

Camera and motion direction

At dawn, a white paper boat glides across a lake. Track smoothly just above the water as sunlight lights the mist, in a single continuous shot.

Specify subject, motion and camera direction for a coherent continuous shot.

Reference-guided video

Use the supplied scene and character references for a clip of the character entering a courtyard and turning toward the camera. Preserve design consistency with a slow pullback.

Use the model’s supported reference mode and specify the traits that should remain consistent.

Platform-generated examples

Macro product film

View prompt

Macro commercial film of an imaginary translucent cobalt perfume bottle on wet black stone. A soft light travels across the glass, condensation slowly forms, and the camera makes one controlled half-orbit. No logos or text.

Original media ↗Try this prompt ↗

What is Seedance 2.0 Fast?

Create videos with Seedance 2.0 Fast using text, images, video, audio. Available resolutions: 480p / 720p. Try the current API settings, preview results and reuse your inputs.

Seedance 2.0 Fast is a distinct variant in the Seedance 2.0 API. Its documented output choices differ; other variants’ full capabilities should not be assumed.

Official model information ↗ · 2026-10-14

Seedance 2.0 Fast specifications

Model ID	seedance-2.0-fast
Provider	ByteDance
API	/v1/tasks
Resolution	480p / 720p
Aspect ratio	21:9 / 16:9 / 9:16 / 4:3 / 3:4 / 1:1
Duration	4–15 seconds
Reference images	Up to 9
Frame images	Up to 2
Reference videos	Up to 3
Reference audio	Up to 3
Generated audio	Configurable; reference-video restrictions may apply

Before you generate

Use the current model ID and the API request shape shown on this page.
Generation is asynchronous. Keep the returned task ID to retrieve the result and billing status.
Frame and reference modes may be mutually exclusive. Check the combination constraints before submitting.
Only options supported by the current platform contract are exposed in Playground.

Compare Seedance 2.0 Fast with related models

Specification	Seedance 2.0 Fast	Seedance 2.0	Kling V3 Omni
Provider	ByteDance	ByteDance	Kuaishou
Input → output	TextImageVideoAudioVideo	TextImageVideoAudioVideo	TextImageVideoVideo
Start / end frames	Supported · 1 or 2 images	Supported · 1 or 2 images	Supported · 1 or 2 images
Reference videos	3	3	1
Reference audio	3	3	—
Selection basis	Current model	Both declare text, image, video, audio input · Same billing units	Both declare text, image, video input
Resolution	480p / 720p	480p / 720p / 1080p	720p / 1080p
Reference images	9	9	3
Starting price	$0.03 / second	$0.05 / second	$0 / request

Choose by the input types, output settings and billing unit your workflow needs. Try the same prompt across models to compare results for your own use case.

BUILD WITH ASTRAL NEXUS

Build with Seedance 2.0 Fast in your app

Submit parameters through the Media Tasks API, then retrieve the result with the task ID. Image and video models keep their own input requirements.

01
Get your API key
Sign in and prepare a key with access to this model.
02
Configure your request
Choose parameters in Playground and copy the API example.
03
Run and inspect the result
Review status, outputs and charges in History.

Read the model API guide ↗

API integration

POST /v1/tasks · Authorization: Bearer

cURL

curl 'https://vip.astralgames.ai/v1/tasks' \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $MODEL_API_KEY" \
  --data '{
  "model": "seedance-2.0-fast",
  "input": {
    "seconds": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9",
    "generate_audio": true,
    "prompt": "A quiet mountain lake at sunrise, soft morning light."
  }
}'

JavaScript

const response = await fetch("https://vip.astralgames.ai/v1/tasks", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Bearer $MODEL_API_KEY"
  },
  body: JSON.stringify({
    "model": "seedance-2.0-fast",
    "input": {
      "seconds": 5,
      "resolution": "720p",
      "aspect_ratio": "16:9",
      "generate_audio": true,
      "prompt": "A quiet mountain lake at sunrise, soft morning light."
    }
  })
});
if (!response.ok) throw new Error(await response.text());
console.log(await response.text());

Python

import json
import requests

response = requests.post(
    "https://vip.astralgames.ai/v1/tasks",
    headers=json.loads("{\"Content-Type\":\"application/json\",\"Authorization\":\"Bearer $MODEL_API_KEY\"}"),
    json=json.loads("{\"model\":\"seedance-2.0-fast\",\"input\":{\"seconds\":5,\"resolution\":\"720p\",\"aspect_ratio\":\"16:9\",\"generate_audio\":true,\"prompt\":\"A quiet mountain lake at sunrise, soft morning light.\"}}"),
    timeout=300,
)
response.raise_for_status()
print(response.text)

Poll the returned task ID for processing status and output assets.

curl -H "Authorization: Bearer $MODEL_API_KEY" "https://vip.astralgames.ai/v1/tasks/$TASK_ID"

Documentation: Authentication · Task status and results · Error handling

Full API parameters and combination constraints

Request parameters

Parameter	Type	Values & constraints
`audios`	array
`images`	array
`prompt` *	string
`videos`	array
`seconds`	integer	Default: 5
`resolution`	JSON	"480p" · "720p"Default: "720p"
`aspect_ratio`	JSON	"21:9" · "16:9" · "9:16" · "4:3" · "3:4" · "1:1"Default: "16:9"
`frames_images`	array
`generate_audio`	boolean	Default: true

Full JSON Schema and combination constraints

{
  "type": "object",
  "allOf": [
    {
      "not": {
        "required": [
          "frames_images",
          "images"
        ]
      }
    }
  ],
  "required": [
    "prompt"
  ],
  "properties": {
    "audios": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 3,
      "minItems": 1
    },
    "images": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 9,
      "minItems": 1
    },
    "prompt": {
      "type": "string",
      "minLength": 1
    },
    "videos": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 3,
      "minItems": 1
    },
    "seconds": {
      "type": "integer",
      "default": 5,
      "maximum": 15,
      "minimum": 4
    },
    "resolution": {
      "enum": [
        "480p",
        "720p"
      ],
      "default": "720p"
    },
    "aspect_ratio": {
      "enum": [
        "21:9",
        "16:9",
        "9:16",
        "4:3",
        "3:4",
        "1:1"
      ],
      "default": "16:9"
    },
    "frames_images": {
      "type": "array",
      "items": {
        "type": "string",
        "format": "uri"
      },
      "maxItems": 2,
      "minItems": 1
    },
    "generate_audio": {
      "type": "boolean",
      "default": true
    }
  },
  "additionalProperties": false
}

Seedance 2.0 Fast API · Common questions

Answers about pricing, inputs, integration and results.

How much does Seedance 2.0 Fast cost?

The current public price starts at $0.03 / second. The pricing section lists each specification. Playground checks your account price before submitting; the completed request records the final charge.

How do I get a Astral Nexus API key?

Sign in and open Quick Start above the workspace. Select or create a key with access to this model, then copy the request example.

Which inputs and output settings are supported?

Supported input fields: audios, images, prompt, videos, seconds, resolution, aspect_ratio, frames_images, generate_audio. The parameter table includes allowed values and defaults.

Can I use reference images?

Yes. Use the reference mode to upload images or supply their URLs. The current limit is 9 images. Reference images guide a new generation; they do not imply mask editing support.

How do I retrieve results and past requests?

Save the returned task ID and query the task until it succeeds or fails. The History tab lets you reopen your tasks and reuse their parameters.

What happens if the model is closed?

The model keeps its page and identity, but new generation requests are blocked. Existing task records remain accessible. An upstream outage is reported separately from an administrator closing the model.

Read the API documentation ↗

Discover more AI tools

Browse all models ↗

Integration topics / Documentation

All documentation ↗

NODE.JSHello, API.

Docs: Submit, poll and save a video

Keep the task ID, handle failures and local deadlines, then save outputs.

View docs section ↗

BUDGET/v1/tasks

Docs: Batch tasks and budgets

Distinguish per-request and per-second rates; bound concurrency and retries.

View docs section ↗

WORKFLOW{ your next idea }

Docs: Image and video task learning path

From choosing inputs to reviewing outputs and charges.

View docs section ↗

Seedance 2.0 Fast API

Build with this model

Seedance 2.0 Fast pricing

See what it can create.

Camera and motion direction

Reference-guided video

Platform-generated examples

Macro product film

What is Seedance 2.0 Fast?

Seedance 2.0 Fast specifications

Before you generate

Compare Seedance 2.0 Fast with related models

Build with Seedance 2.0 Fast in your app

API integration

Request parameters

Seedance 2.0 Fast API · Common questions

How much does Seedance 2.0 Fast cost?

How do I get a Astral Nexus API key?

Which inputs and output settings are supported?

Can I use reference images?

How do I retrieve results and past requests?

What happens if the model is closed?

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API documentation

Integration topics / Documentation

Docs: Submit, poll and save a video

Docs: Batch tasks and budgets

Docs: Image and video task learning path