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Wan Video

The Wan family is currently exposed through the Ali Bailian-compatible public contract:
  • POST /alibailian/api/v1/services/aigc/video-generation/video-synthesis
  • GET /alibailian/api/v1/tasks/{task_id}
For the full request and task-query schema, see Ali Bailian Video API. This page closes only the first batch of public Wan models, capabilities, and billing truth.

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First-Batch Models

ModelCustomer-facing capabilityOfficial billing truthCurrent state
wan2.5-t2v-previewtext-to-videoper secondverified
wan2.5-i2v-previewimage-to-videoper secondverified
wan2.2-t2v-plustext-to-videoper secondverified
wan2.2-i2v-plusimage-to-videoper secondverified
wan2.2-i2v-flashimage-to-videoper secondverified
wan2.2-kf2v-flashfirst-last-frame videoper secondBeta
wan2.2-s2vsubject-reference videoper secondBeta
wan2.2-kf2v-flash and wan2.2-s2v are already aligned in code and billing capability buckets, but their live artifact closure is still in progress, so they remain Beta.

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Capabilities And Official Prices

ModelCapability bucketResolutionOfficial price
wan2.5-t2v-previewtext-to-video480P / 720P / 1080P¥0.30 / ¥0.60 / ¥1.00 / sec
wan2.5-i2v-previewimage-to-video480P / 720P / 1080P¥0.30 / ¥0.60 / ¥1.00 / sec
wan2.2-t2v-plustext-to-video480P / 1080P¥0.14 / ¥0.70 / sec
wan2.2-i2v-plusimage-to-video480P / 1080P¥0.14 / ¥0.70 / sec
wan2.2-i2v-flashimage-to-video480P / 720P / 1080P¥0.10 / ¥0.20 / ¥0.48 / sec
wan2.2-kf2v-flashfirst-last-frame video480P / 720P / 1080P¥0.10 / ¥0.20 / ¥0.48 / sec
wan2.2-s2vsubject-reference video480P / 720P¥0.50 / ¥0.90 / sec

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Protocol Conventions

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1. Text-to-video

  • Key fields: model, input.prompt, parameters.resolution, parameters.duration
  • Typical models: wan2.5-t2v-preview, wan2.2-t2v-plus

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2. Image-to-video

  • Key field: input.img_url
  • Typical models: wan2.5-i2v-preview, wan2.2-i2v-plus, wan2.2-i2v-flash

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3. First-last-frame video

  • Key fields: input.first_frame_url, input.last_frame_url
  • Typical model: wan2.2-kf2v-flash

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4. Subject-reference video

  • Key field: input.image_url
  • Typical model: wan2.2-s2v

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Request Examples

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Image-to-video

cURL
curl -X POST https://crazyrouter.com/alibailian/api/v1/services/aigc/video-generation/video-synthesis \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "wan2.5-i2v-preview",
    "input": {
      "prompt": "Make the subject turn toward the camera",
      "img_url": "https://example.com/first-frame.png"
    },
    "parameters": {
      "resolution": "720P",
      "duration": 5,
      "prompt_extend": true,
      "audio": true
    }
  }'

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First-last-frame video

{
  "model": "wan2.2-kf2v-flash",
  "input": {
    "prompt": "A smooth transition from day to night",
    "first_frame_url": "https://example.com/frame-start.png",
    "last_frame_url": "https://example.com/frame-end.png"
  },
  "parameters": {
    "resolution": "720P",
    "duration": 5
  }
}

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Subject-reference video

{
  "model": "wan2.2-s2v",
  "input": {
    "prompt": "Animate the reference portrait with light natural speaking motion",
    "image_url": "https://example.com/portrait.png",
    "audio_url": "https://example.com/voice.mp3"
  },
  "parameters": {
    "resolution": "720P",
    "duration": 5
  }
}

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Task Retrieval

Wan remains an async task family. After creation, query: 
GET /alibailian/api/v1/tasks/{task_id}
When output.task_status reaches success, use output.video_url as the final video result.

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Scope Notes

  • The customer-facing contract is the Ali Bailian-compatible path. The old Fal-only route description is no longer the source of truth.
  • Crazyrouter can internally route to official, ApiPass, Kie, or other third-party providers, but those providers do not define customer protocols.
  • Beta rows can still be shown publicly now; after launch, use production task logs to close live evidence and then remove the Beta label.