curl --request POST \
  --url https://api.modellix.ai/api/v1/bytedance/seedream-5.0-lite \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A cinematic sunset over a futuristic city skyline"
}
'

{
  "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"
    }
  }
}

{
  "code": 400,
  "message": "Invalid parameters: parameter 'prompt' is required"
}

{
  "code": 401,
  "message": "Authentication failed: invalid API key"
}

{
  "code": 429,
  "message": "Rate limit exceeded: 100 requests per minute, retry after 60 seconds"
}

{
  "code": 500,
  "message": "Internal server error"
}

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.

POST

bytedance

seedream-5.0-lite

curl --request POST \
  --url https://api.modellix.ai/api/v1/bytedance/seedream-5.0-lite \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A cinematic sunset over a futuristic city skyline"
}
'

{
  "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"
    }
  }
}

{
  "code": 400,
  "message": "Invalid parameters: parameter 'prompt' is required"
}

{
  "code": 401,
  "message": "Authentication failed: invalid API key"
}

{
  "code": 429,
  "message": "Rate limit exceeded: 100 requests per minute, retry after 60 seconds"
}

{
  "code": 500,
  "message": "Internal server error"
}

Authorizations

Authorization

string

header

required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json

prompt

string

required

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.

Required string length: 1 - 10000

Example:

"A futuristic city at sunset, ultra detailed"

size

string

default:2048x2048

Image size in format 'widthxheight'. Seedream 5.0 Lite supports custom 2K/3K resolutions.

Example:

"3072x3072"

sequential_image_generation

enum<string>

default:disabled

Batch generation mode. 'auto': model-controlled batch generation, 'disabled': generate single image only.

Available options:

auto,

disabled

Example:

"auto"

sequential_image_generation_max_images

integer

default:5

Maximum number of images for batch generation. This value is an upper limit, actual generated count may be less.

Required range: 1 <= x <= 15

Example:

3

optimize_prompt_mode

enum<string>

default:standard

Prompt optimization mode. Only 'standard' mode is supported.

Available options:

standard

Example:

"standard"

output_format

enum<string>

default:jpeg

Output image format. Supported values: 'jpeg' and 'png'.

Available options:

jpeg,

png

Example:

"png"

Response

Task submitted successfully

code

integer

required

Response code, 0 indicates success

Example:

0

message

string

required

Response message

Example:

"success"

data

object

required

Detailed data about the submitted asynchronous task.

Show child attributes

Seedream 4 5 t2i Seedream 5 0 lite edit