更新日: 2026-06-06

Seedance

Seedance is ByteDance / Doubao’s video generation family. On Crazyrouter, the public contract stays on the native /volc/v1/* surface. The old unified-video doubao-seedance-2-0-fast label is no longer the primary customer-facing protocol.

Current Public Models

Model	Current public positioning
`doubao-seedance-1-0-lite-t2v`	text-to-video
`doubao-seedance-1-0-lite-i2v`	single-image image-to-video
`doubao-seedance-1-0-pro`	general higher-quality generation
`doubao-seedance-1-0-pro-fast`	general faster generation
`doubao-seedance-1-5-pro`	higher-end version with room for later official capability expansion
`doubao-seedance-2-0`	official Seedance 2.0 multimodal video generation
`doubao-seedance-2-0-fast`	official Seedance 2.0 Fast multimodal video generation

Submit a Video Task

POST /volc/v1/contents/generations/tasks

Current Public Request Parameters

Parameter	Type	Required	Description
`model`	string	Yes	Public model name. Use one of the canonical model names above
`content`	array	Yes	Input content array
`content[].type`	string	Yes	Supported values are `text`, `image_url`, `video_url`, `audio_url`, and `draft_task`
`content[].text`	string	Conditionally	Required when `type=text`
`content[].image_url.url`	string	Conditionally	Required when `type=image_url`
`content[].video_url.url`	string	Conditionally	Required when `type=video_url`
`content[].audio_url.url`	string	Conditionally	Required when `type=audio_url`
`content[].role`	string	Optional	Seedance 2.0 supports `first_frame`, `last_frame`, `reference_image`, `reference_video`, and `reference_audio`
`generate_audio`	boolean	Optional	Whether to generate audio on Seedance 2.0
`ratio`	string	Optional	Output aspect ratio such as `16:9`
`resolution`	string	Optional	Seedance 2.0 / 2.0 fast currently supports only `480p` and `720p`
`duration`	integer	Optional	Seedance 2.0 / 2.0 fast supports `4-15` or `-1`
`watermark`	boolean	Optional	Whether to add watermark
`seed`	integer	Optional	Random seed

Seedance 2.0 Official Capability Boundary

Supports four input modalities: text, image, video, and audio.
Supports multimodal references: up to 9 images, 3 videos, and 3 audios, with a mixed file limit of 12.
Image formats: jpeg, png, webp, bmp, tiff, gif; each image must stay under 30MB.
Video formats: mp4, mov; up to 3 video references, recommended combined duration in [2, 15]s, total file size under 50MB.
Audio formats: mp3, wav; up to 3 audio references, combined duration <= 15s, total file size under 15MB.
Audio cannot be provided alone. At least 1 image or video reference is required with it.
Output duration supports 4-15s, and -1 can be passed through to let the upstream use its default behavior.
Supports 480p and 720p; 1080p is currently unsupported on Seedance 2.0 / 2.0 fast.
frames is currently unsupported for Seedance 2.0 / 2.0 fast.
camera_fixed is currently unsupported for Seedance 2.0 / 2.0 fast.
In the product UI, Seedance 2.0 is currently exposed mainly as “first/last frame” and “omni reference” entry points; on the API side those semantics map to content[].role and content[].type.
Upstream compliance currently blocks clearly realistic human-face image or video uploads.

Official Seedance 2.0 Pricing Truth

Model	Official billing mode	Official price
`doubao-seedance-2-0`	per output token	`28 CNY / 1M output tokens` with video input; `46 CNY / 1M output tokens` without video input
`doubao-seedance-2-0-fast`	per output token	`22 CNY / 1M output tokens` with video input; `37 CNY / 1M output tokens` without video input

MIME, duration, and file-size enforcement for remote URL assets is ultimately handled by the upstream. Crazyrouter currently pre-validates count limits, duration parameter boundaries, the no-audio-only rule, and explicit unsupported fields such as frames, camera_fixed, and non-480p/720p output requests.

Text-to-Video Example

curl -X POST https://api.crazyrouter.com/volc/v1/contents/generations/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "doubao-seedance-1-0-lite-t2v",
    "content": [
      {
        "type": "text",
        "text": "A slow push-in shot of a white seagull skimming over the ocean with golden sunset reflections on the waves"
      }
    ]
  }'

import requests

response = requests.post(
    "https://api.crazyrouter.com/volc/v1/contents/generations/tasks",
    headers={
        "Content-Type": "application/json",
        "Authorization": "Bearer YOUR_API_KEY"
    },
    json={
        "model": "doubao-seedance-1-0-lite-t2v",
        "content": [
            {
                "type": "text",
                "text": "A slow push-in shot of a white seagull skimming over the ocean with golden sunset reflections on the waves"
            }
        ]
    }
)

print(response.json())

Single-Image Image-to-Video Example

cURL

curl -X POST https://api.crazyrouter.com/volc/v1/contents/generations/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "doubao-seedance-1-0-lite-i2v",
    "content": [
      {
        "type": "text",
        "text": "The subject turns naturally while wind lightly moves the hair"
      },
      {
        "type": "image_url",
        "image_url": {
          "url": "https://example.com/portrait.png"
        }
      }
    ]
  }'

Seedance 2.0 Multimodal Example

cURL

curl -X POST https://api.crazyrouter.com/volc/v1/contents/generations/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "doubao-seedance-2-0",
    "content": [
      {
        "type": "text",
        "text": "A girl turns back on the beach at sunset, with more cinematic motion and natural ambient sound"
      },
      {
        "type": "image_url",
        "image_url": {
          "url": "https://example.com/first-frame.png"
        },
        "role": "reference_image"
      },
      {
        "type": "video_url",
        "video_url": {
          "url": "https://example.com/reference-video.mp4"
        },
        "role": "reference_video"
      },
      {
        "type": "audio_url",
        "audio_url": {
          "url": "https://example.com/reference-audio.mp3"
        },
        "role": "reference_audio"
      }
    ],
    "generate_audio": true,
    "ratio": "16:9",
    "duration": 11,
    "watermark": false
  }'

Successful Submit Response

{
  "id": "cgt_task_abc123",
  "task_id": "cgt_task_abc123"
}

Query Task

GET /volc/v1/contents/generations/tasks/{task_id}

cURL

curl https://api.crazyrouter.com/volc/v1/contents/generations/tasks/cgt_task_abc123 \
  -H "Authorization: Bearer YOUR_API_KEY"

Completed Response Example

{
  "id": "cgt_task_abc123",
  "object": "video",
  "model": "doubao-seedance-1-0-lite-t2v",
  "status": "SUCCESS",
  "progress": 100,
  "created_at": 1774580000,
  "completed_at": 1774580030,
  "seconds": "5",
  "metadata": {
    "url": "https://media.crazyrouter.com/task-artifacts/2026/03/28/seedance/cgt_task_abc123.mp4",
    "artifact_url": "https://media.crazyrouter.com/task-artifacts/2026/03/28/seedance/cgt_task_abc123.mp4",
    "resolution": "720p",
    "ratio": "16:9",
    "frames_per_second": 24
  }
}

Task Status

Status	Description
`queued`	submitted or waiting in queue
`in_progress`	generation in progress
`SUCCESS`	completed and ready from `metadata.url`
`failed`	terminal failure

The public docs now only commit to the native /volc/v1/* route family and canonical model names. The old doubao-seedance-2-0-fast label is retained only as historical context, not as the primary contract for new integrations.

The official Seedance pricing truth is currently tracked as per_output_token, not per-second. If the pricing page later shows a normalized platform billing unit, that should be treated as the platform sell-side view rather than the native official unit.

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Seedance

Seedance

Current Public Models

Submit a Video Task

Current Public Request Parameters

Seedance 2.0 Official Capability Boundary

Official Seedance 2.0 Pricing Truth

Text-to-Video Example

Single-Image Image-to-Video Example

Seedance 2.0 Multimodal Example

Successful Submit Response

Query Task

Completed Response Example

Task Status

​Seedance

​Current Public Models

​Submit a Video Task

​Current Public Request Parameters

​Seedance 2.0 Official Capability Boundary

​Official Seedance 2.0 Pricing Truth

​Text-to-Video Example

​Single-Image Image-to-Video Example

​Seedance 2.0 Multimodal Example

​Successful Submit Response

​Query Task

​Completed Response Example

​Task Status

Seedance

Current Public Models

Submit a Video Task

Current Public Request Parameters

Seedance 2.0 Official Capability Boundary

Official Seedance 2.0 Pricing Truth

Text-to-Video Example

Single-Image Image-to-Video Example

Seedance 2.0 Multimodal Example

Successful Submit Response

Query Task

Completed Response Example

Task Status