> ## Documentation Index
> Fetch the complete documentation index at: https://docs.modellix.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Wan 2.6 I2V Flash

> [Core Function] Wan 2.6 I2V Flash is an older generation image-to-video model. [Strengths] Provided enhanced dynamic camera movements and rich lighting effects. Maintained for backward compatibility. [Best For] Existing legacy integrations that require the specific speed/cost tradeoff of this older model. [Limitations] Do NOT use this for new creations. It is a legacy model maintained for backward compatibility. [Routing] Only use if explicitly requested; otherwise use Wan 2.7 I2V.



## OpenAPI

````yaml /model-api/alibaba/alibaba-i2v.json post /alibaba/wan2.6-i2v-flash
openapi: 3.1.0
info:
  description: The image-to-video models API from Alibaba.
  version: 1.0.0
  contact:
    name: Modellix Support
    email: support@modellix.ai
  title: Alibaba Image-to-Video Models API
servers:
  - url: https://api.modellix.ai/api/v1
    description: The image-to-video models API from Alibaba.
security:
  - bearerAuth: []
paths:
  /alibaba/wan2.6-i2v-flash:
    post:
      summary: Wan 2.6 I2V Flash
      description: >-
        [Core Function] Wan 2.6 I2V Flash is an older generation image-to-video
        model. [Strengths] Provided enhanced dynamic camera movements and rich
        lighting effects. Maintained for backward compatibility. [Best For]
        Existing legacy integrations that require the specific speed/cost
        tradeoff of this older model. [Limitations] Do NOT use this for new
        creations. It is a legacy model maintained for backward compatibility.
        [Routing] Only use if explicitly requested; otherwise use Wan 2.7 I2V.
      operationId: wan26I2vFlashAsync
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Wan26I2vFlashRequest'
            examples:
              basic:
                summary: Basic video generation
                value:
                  img_url: https://example.com/image.jpg
              advanced:
                summary: Advanced with all parameters
                value:
                  img_url: https://example.com/image.jpg
                  prompt: Camera slowly zooms in
                  negative_prompt: blurry, distorted
                  resolution: 720P
                  duration: 10
                  audio: true
                  prompt_extend: true
                  seed: 12345
      responses:
        '200':
          description: Task submitted successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AsyncTaskResponse'
components:
  schemas:
    Wan26I2vFlashRequest:
      type: object
      required:
        - img_url
      properties:
        prompt:
          type: string
          description: Video content description, supports Chinese and English
          minLength: 1
          maxLength: 800
          example: Camera slowly zooms in
        img_url:
          type: string
          description: First frame image URL (supports HTTP/HTTPS/Base64)
          example: https://example.com/image.jpg
        negative_prompt:
          type: string
          description: Negative prompt describing unwanted content
          maxLength: 500
          example: blurry, distorted
        resolution:
          type: string
          description: Video resolution tier
          enum:
            - 480P
            - 720P
            - 1080P
          example: 720P
        duration:
          type: integer
          description: Video duration in seconds (integer)
          enum:
            - 2
            - 3
            - 4
            - 5
            - 6
            - 7
            - 8
            - 9
            - 10
            - 11
            - 12
            - 13
            - 14
            - 15
          default: 5
          example: 5
        audio:
          type: boolean
          description: >-
            Whether to generate video with audio (only supported by
            wan2.6-i2v-flash)
          default: false
          example: false
        prompt_extend:
          type: boolean
          description: Enable prompt intelligent rewriting
          default: false
          example: false
        seed:
          type: integer
          description: Random seed for reproducibility
          minimum: 0
          maximum: 2147483647
          example: 42
        audio_url:
          type: string
          description: Custom audio URL (supports wav/mp3, 3-30 seconds, ≤15MB)
          format: uri
          example: https://example.com/audio.mp3
        shot_type:
          type: string
          description: Shot type (single-shot or multi-shot narrative)
          enum:
            - single
            - multi
          example: single
    AsyncTaskResponse:
      type: object
      required:
        - code
        - message
        - data
      properties:
        code:
          type: integer
          description: Response code, 0 indicates success
          example: 0
        message:
          type: string
          description: Response message
          example: success
        data:
          type: object
          required:
            - status
            - task_id
            - model_id
          properties:
            status:
              type: string
              enum:
                - pending
                - processing
              description: Task status
              example: pending
            task_id:
              type: string
              description: Unique task identifier
              example: task-abc123
            model_id:
              type: string
              description: Model ID
              example: model-123
            get_result:
              type: object
              description: API information to query the task result
              properties:
                method:
                  type: string
                  description: HTTP method
                  example: GET
                url:
                  type: string
                  description: Full URL to query the task result
                  example: https://api.modellix.ai/api/v1/tasks/task-abc123
          description: Detailed data about the submitted asynchronous task.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'API Key authentication. Format: `Bearer YOUR_API_KEY`.'

````