> ## Documentation Index > Fetch the complete documentation index at: https://docs.evolink.ai/llms.txt > Use this file to discover all available pages before exploring further. # Wan2.5 Text to Image > - WAN2.5 (wan2.5-text-to-image) model supports text-to-image generation mode - Asynchronous processing mode, use the returned task ID to [query](/en/api-manual/task-management/get-task-detail) - Generated image links are valid for 24 hours, please save them promptly ## OpenAPI ````yaml /en/api-manual/image-series/wan2.5/wan2.5-text-to-image.json POST /v1/images/generations openapi: 3.1.0 info: title: wan2.5-text-to-image Interface description: >- Use WAN2.5 model for text-to-image generation with simplified model parameter configuration license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: Production environment security: - bearerAuth: [] tags: - name: Image Generation description: AI image generation related APIs paths: /v1/images/generations: post: tags: - Image Generation summary: wan2.5-text-to-image Interface description: >- - WAN2.5 (wan2.5-text-to-image) model supports text-to-image generation mode - Asynchronous processing mode, use the returned task ID to [query](/en/api-manual/task-management/get-task-detail) - Generated image links are valid for 24 hours, please save them promptly operationId: createWan25TextToImageGeneration requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/Wan25TextToImageRequest' examples: text_to_image: summary: Text to Image value: model: wan2.5-text-to-image prompt: A serene lake reflecting the beautiful sunset scenery responses: '200': description: Image task created successfully content: application/json: schema: $ref: '#/components/schemas/ImageGenerationResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_request message: Invalid request parameters type: invalid_request_error '401': description: Unauthenticated, invalid or expired token content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: Insufficient quota, recharge required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: insufficient_quota message: Insufficient quota. Please top up your account. type: insufficient_quota '403': description: Access denied content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: 'Token does not have access to model: wan2.5-text-to-image' type: invalid_request_error '429': description: Rate limit exceeded content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: rate_limit_exceeded message: Too many requests, please try again later type: rate_limit_error '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: internal_error message: Internal server error type: api_error components: schemas: Wan25TextToImageRequest: type: object required: - model - prompt properties: model: type: string description: Model name enum: - wan2.5-text-to-image default: wan2.5-text-to-image example: wan2.5-text-to-image prompt: type: string description: Prompt describing the image to generate, limited to 2000 tokens example: A peaceful lake reflecting the beautiful sunset maxLength: 2000 size: type: string description: >- Size of the generated image, currently only supports **pixel format**: - Width x Height, such as: `768x768`, `1280x1280`, `1440x1440` and other values within the range - Total pixel range: `[768x768, 1440x1440]` - Aspect ratio range: `[1/4, 4]` example: 1280x1280 'n': type: integer description: >- Number of images to generate, supports any integer value between `[1,4]` **Note:** - A single request will be pre-charged based on the value of `n`, and the actual charge will be based on the number of generated images example: 1 prompt_extend: type: boolean description: >- Whether to enable intelligent prompt rewriting. When enabled, a large language model will optimize the prompt. This is particularly effective for prompts that lack detail or are too simple. Default value is `true` default: true example: true callback_url: type: string description: >- HTTPS callback address after task completion **Callback Timing:** - Triggered when task is completed, failed, or cancelled - Sent after billing confirmation is completed **Security Restrictions:** - Only HTTPS protocol is supported - Callback to internal IP addresses is prohibited (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.) - URL length must not exceed `2048` characters **Callback Mechanism:** - Timeout: `10` seconds - Maximum `3` retries on failure (retries after `1` second/`2` seconds/`4` seconds) - Callback response body format is consistent with the task query API response format - Callback address returning 2xx status code is considered successful, other status codes will trigger retry format: uri example: https://your-domain.com/webhooks/image-task-completed ImageGenerationResponse: type: object properties: created: type: integer description: Task creation timestamp example: 1757156493 id: type: string description: Task ID example: task-unified-1757156493-imcg5zqt model: type: string description: Actual model name used example: wan2.5-text-to-image object: type: string enum: - image.generation.task description: Specific task type progress: type: integer description: Task progress percentage (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: Task status enum: - pending - processing - completed - failed example: pending task_info: $ref: '#/components/schemas/TaskInfo' description: Asynchronous task information type: type: string enum: - text - image - audio - video description: Task output type example: image usage: $ref: '#/components/schemas/Usage' description: Usage and billing information ErrorResponse: type: object properties: error: type: object properties: code: type: string description: Error code identifier message: type: string description: Error description type: type: string description: Error type TaskInfo: type: object properties: can_cancel: type: boolean description: Whether the task can be cancelled example: true estimated_time: type: integer description: Estimated completion time (seconds) minimum: 0 example: 30 Usage: type: object description: Usage and billing information properties: billing_rule: type: string description: Billing rule enum: - per_call - per_token - per_second example: per_call credits_reserved: type: number description: Estimated credits consumed minimum: 0 example: 1 user_group: type: string description: User group category enum: - default - vip example: default securitySchemes: bearerAuth: type: http scheme: bearer description: >- ##All APIs require Bearer Token authentication## **Get API Key:** Visit [API Key Management Page](https://evolink.ai/dashboard/keys) to get your API Key **Add to request header:** ``` Authorization: Bearer YOUR_API_KEY ``` ````