API Overview

Seedance

Video generation is asynchronous:

1. Create a task — POST /api/v3/contents/generations/tasks. The response returns a task id, not the video.
2. Poll the task — GET /api/v3/contents/generations/tasks/{id} until status is succeeded or failed.
3. Retrieve the video URL — on success, download content.video_url. Video URLs are valid for 24 hours. Save the file before the link expires.

Supported Seedance models on this site: dreamina-seedance-2-5-260628, dreamina-seedance-2-0-260128, dreamina-seedance-2-0-fast-260128, dreamina-seedance-2-0-mini-260615.

Quick example (Seedance 2.5, 5 seconds, 720p, 16:9). Replace $ARK_API_KEY with the key you create in the console. Do not hard-code keys in client-side code.

curl -X POST \
  https://ark.ap-southeast.bytepluses.com/api/v3/contents/generations/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $ARK_API_KEY" \
  -d '{
    "model": "dreamina-seedance-2-5-260628",
    "content": [{"type": "text", "text": "A ceramic cup on a wooden table, slow camera push-in, soft window light."}],
    "generate_audio": true,
    "resolution": "720p",
    "ratio": "16:9",
    "duration": 5
  }'

Poll the task:

curl -X GET \
  "https://ark.ap-southeast.bytepluses.com/api/v3/contents/generations/tasks/$TASK_ID" \
  -H "Authorization: Bearer $ARK_API_KEY"

Default resolution for these Seedance models is 720p. Set it explicitly so the cost matches the price table. This example does not enable watermark.

Sources: Create a video generation task, Base URL and authentication.

Wan

Video generation is asynchronous:

1. Create a task on the video-synthesis endpoint.
2. Poll GET /api/v1/tasks/{task_id} until output.task_status is SUCCEEDED or FAILED.
3. Retrieve the output video when the task succeeds.

Quick example (Wan 3.0, 5 seconds, 720P, 16:9):

curl -X POST \
  "https://dashscope-intl.aliyuncs.com/api/v1/services/aigc/video-generation/video-synthesis" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $DASHSCOPE_API_KEY" \
  -d '{
    "model": "wan3.0-video",
    "input": {"prompt": "A ceramic cup on a wooden table, slow camera push-in, soft window light."},
    "parameters": {"resolution": "720P", "ratio": "16:9", "duration": 5}
  }'

After go-live, prefer the workspace-dedicated domain we give you. The DashScope shared international host remains documented; official docs recommend migrating to the workspace domain.

Sources: Wan 3.0 API reference.

Get started

1. Sign contract and prepay — we confirm models, volume, pricing, and support terms. All accounts are prepaid in USD.
2. We provision your sub-account — BytePlus IAM for Seedance, and/or an Alibaba Cloud RAM user plus Model Studio workspace for Wan, with only the permissions you need.
3. Log in and create your API key — you create the key yourself in the official console. Do not share it.
4. Go live — run a test task, then switch production traffic to the same official endpoint.

Higher limits are available — contact us. We request limit increases on your behalf. You cannot raise limits from the sub-account console yourself.