> ## 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. # Seedream 5.0 Lite > [Core Function] Seedream 5.0 Lite is a smart, reasoning-enhanced image generation model with real-time web search capabilities. [Strengths] It excels at generating time-sensitive imagery, infographics, and content requiring deep world knowledge or online search, boasting superior prompt understanding and reasoning. [Best For] Highly recommended for: current-event posters, text-heavy designs, and concept art requiring complex logical reasoning. [Limitations] As a 'Lite' model, its absolute photorealistic aesthetic ceiling might be slightly lower than the specialized 4.5 model. [Routing] Use this model by default when the user needs real-time information, deep reasoning, or complex intent understanding in their image. ## OpenAPI ````yaml /model-api/bytedance/bytedance-t2i.json post /bytedance/seedream-5.0-lite openapi: 3.1.0 info: description: The text-to-image models API from ByteDance. version: 1.0.0 contact: name: Modellix Support email: support@modellix.ai title: ByteDance Text-to-Image Models API servers: - url: https://api.modellix.ai/api/v1 description: The text-to-image models API from ByteDance. security: - bearerAuth: [] paths: /bytedance/seedream-5.0-lite: post: summary: Seedream 5.0 Lite description: >- [Core Function] Seedream 5.0 Lite is a smart, reasoning-enhanced image generation model with real-time web search capabilities. [Strengths] It excels at generating time-sensitive imagery, infographics, and content requiring deep world knowledge or online search, boasting superior prompt understanding and reasoning. [Best For] Highly recommended for: current-event posters, text-heavy designs, and concept art requiring complex logical reasoning. [Limitations] As a 'Lite' model, its absolute photorealistic aesthetic ceiling might be slightly lower than the specialized 4.5 model. [Routing] Use this model by default when the user needs real-time information, deep reasoning, or complex intent understanding in their image. operationId: seedream50LiteT2iAsync requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/Seedream50LiteT2iRequest' examples: basic: summary: Basic generation value: prompt: A cinematic sunset over a futuristic city skyline full_params: summary: Full parameters with PNG output value: prompt: >- A futuristic city at sunset, ultra detailed, cinematic lighting, volumetric clouds size: 3072x3072 sequential_image_generation: auto sequential_image_generation_max_images: 3 optimize_prompt_mode: standard output_format: png responses: '200': description: Task submitted successfully content: application/json: schema: $ref: '#/components/schemas/AsyncTaskResponse' example: code: 0 message: success data: status: pending task_id: task-seedream50lite001 model_id: bytedance/seedream-5.0-lite get_result: method: GET url: >- https://api.modellix.ai/api/v1/tasks/task-seedream50lite001 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: Seedream50LiteT2iRequest: type: object required: - prompt properties: prompt: type: string description: >- Image description text, supports Chinese and English. Maximum 10000 characters. We recommend keeping the prompt under 600 words. Excessively long prompts may scatter information, causing the model to overlook details and focus only on major elements, which can result in missing details in the generated image. minLength: 1 maxLength: 10000 example: A futuristic city at sunset, ultra detailed size: type: string description: >- Image size in format 'widthxheight'. Seedream 5.0 Lite supports custom 2K/3K resolutions. default: 2048x2048 example: 3072x3072 sequential_image_generation: type: string enum: - auto - disabled description: >- Batch generation mode. 'auto': model-controlled batch generation, 'disabled': generate single image only. default: disabled example: auto sequential_image_generation_max_images: type: integer description: >- Maximum number of images for batch generation. This value is an upper limit, actual generated count may be less. default: 5 minimum: 1 maximum: 15 example: 3 optimize_prompt_mode: type: string enum: - standard description: Prompt optimization mode. Only 'standard' mode is supported. default: standard example: standard output_format: type: string enum: - jpeg - png description: 'Output image format. Supported values: ''jpeg'' and ''png''.' default: jpeg example: png 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. ErrorResponse: type: object required: - code - message properties: code: type: integer description: Error code (equals HTTP status code) example: 400 message: type: string description: 'Error message in format ''Category: detail''' example: 'Invalid parameters: parameter ''prompt'' is required' responses: BadRequest: description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 message: 'Invalid parameters: parameter ''prompt'' is required' Unauthorized: description: Unauthorized - Invalid or missing API Key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 401 message: 'Authentication failed: invalid API key' TooManyRequests: description: Too many requests - Rate limit exceeded headers: X-RateLimit-Limit: description: Maximum requests per minute schema: type: integer example: 100 X-RateLimit-Remaining: description: Remaining quota in current window schema: type: integer example: 0 X-RateLimit-Reset: description: Rate limit window reset time (Unix timestamp) schema: type: integer example: 1704067260 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 429 message: >- Rate limit exceeded: 100 requests per minute, retry after 60 seconds InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 500 message: Internal server error securitySchemes: bearerAuth: type: http scheme: bearer description: 'API Key authentication. Format: `Bearer YOUR_API_KEY`.' ````