> ## Documentation Index > Fetch the complete documentation index at: https://docs.vidgo.ai/llms.txt > Use this file to discover all available pages before exploring further. # Seedream-4.5 Image Generation > Advanced image generation model with support for text-to-image, image-to-image, and multi-image reference capabilities 1. After submission, a `task_id` will be returned. If you provided a `callback_url`, when the task status becomes `finished` or `failed`, a POST request will be sent to the `callback_url`. 2. Regardless of whether `callback_url` is provided, you can retrieve the response result through the unified [Query Task Status](/api-manual/task-management/status) endpoint. # Seedream-4.5 Image Generation Seedream-4.5 is an advanced image generation model that supports text-to-image, image-to-image, and image editing with multi-reference capabilities. It delivers high-quality images with flexible aspect ratios and prompt optimization options. ## Available Models * **seedream-4.5** - High-quality text-to-image and image-to-image generation * **seedream-4.5-edit** - Advanced image editing with multi-image reference support (up to 10 images) ## OpenAPI ````yaml /api-manual/image-series/seedream-4-5.json POST /api/generate/submit openapi: 3.0.0 info: title: Vidgo API - Seedream-4.5 API description: >- Advanced image generation model with support for text-to-image, image-to-image, and multi-image reference capabilities version: 1.0.0 servers: - url: https://api.vidgo.ai description: Production server security: - BearerAuth: [] paths: /api/generate/submit: post: tags: - Seedream-4.5 summary: Submit Seedream-4.5 Generation Task description: >- Advanced image generation and editing with multi-reference support and up to 4K resolution operationId: submitSeedream45Task requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SubmitRequest' examples: seedream-4-5: summary: Seedream-4.5 Text-to-Image Generation value: model: seedream-4.5 callback_url: https://your-domain.com/callback input: prompt: >- A serene Japanese garden with cherry blossoms and a koi pond size: '16:9' 'n': 1 seedream-4-5-edit: summary: Seedream-4.5 Image Editing with References value: model: seedream-4.5-edit callback_url: https://your-domain.com/callback input: prompt: Transform the scene to a winter wonderland with snow image_urls: - https://example.com/reference1.jpg - https://example.com/reference2.jpg size: '16:9' 'n': 1 responses: '200': description: Task submitted successfully content: application/json: schema: $ref: '#/components/schemas/SubmitResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 error: message: Invalid request parameters type: invalid_request_error '401': description: Unauthorized - Invalid API key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 401 error: message: Unauthorized - Invalid API key type: authentication_error components: schemas: SubmitRequest: type: object required: - model - input properties: model: type: string description: Seedream-4.5 model identifier enum: - seedream-4.5 - seedream-4.5-edit callback_url: type: string format: uri description: Webhook callback URL for result notifications example: https://your-domain.com/callback input: type: object required: - prompt description: Input parameters for generation properties: prompt: type: string description: Generation prompt describing the desired output maxLength: 2000 example: A beautiful sunset over the ocean image_urls: type: array items: type: string format: uri minItems: 1 maxItems: 10 description: >- Reference image URLs for image-to-image or editing (1-10 images). Required for seedream-4.5-edit model. Supported formats: JPEG, PNG example: - https://example.com/reference1.jpg - https://example.com/reference2.jpg size: type: string description: >- Specify the output image dimensions. Two methods are available, but they cannot be used at the same time. Method 1: Specify the resolution of the generated image, and describe its aspect ratio, shape, or purpose in the prompt using natural language. You let the model determine the width and height. Optional values: 2K, 4K Method 2: Specify the aspect ratio of the generated image. Optional values: 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9 enum: - 2K - 4K - '1:1' - '4:3' - '3:4' - '16:9' - '9:16' - '3:2' - '2:3' - '21:9' default: '1:1' example: '16:9' 'n': type: integer description: >- Number of images to generate (1-15). Credits are pre-deducted based on this count minimum: 1 maximum: 15 default: 1 example: 1 SubmitResponse: type: object required: - code - data properties: code: type: integer example: 200 description: HTTP status code data: type: object required: - task_id - status - created_time properties: task_id: type: string example: task-unified-1757165031-uyujaw3d description: Unique task identifier for status tracking status: type: string enum: - not_started example: not_started description: Initial task status created_time: type: string format: date-time example: '2025-11-12T10:30:00' description: ISO 8601 timestamp when the task was created ErrorResponse: type: object required: - code - error properties: code: type: integer example: 400 description: HTTP status code error: type: object required: - message - type properties: message: type: string example: Invalid request parameters description: Error message describing what went wrong type: type: string example: invalid_request_error description: Error type identifier securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: API Key description: >- All API endpoints require Bearer Token authentication Get your API Key: Visit the [API Key Management Page](https://vidgo.ai/apis/dashboard/api-key) to get your API Key Add it to the request header: ``` Authorization: Bearer YOUR_API_KEY ``` ````