seedream-5.0-lite

Use seedream-5-0-lite-260128 with the same synchronous endpoint for single images, image editing, and sequential image generation.

Select the Special-Ns resource group for specific content requests.

Text to image
Image to image

Create an image

POST /v1/images/generations

cURL

curl --request POST \
  --url https://www.anyfast.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedream-5-0-lite-260128",
    "prompt": "Create four coherent storyboard frames showing an astronaut repairing a spacecraft",
    "size": "2K",
    "seed": 42,
    "sequential_image_generation": "auto",
    "sequential_image_generation_options": { "max_images": 4 },
    "response_format": "url",
    "output_format": "png",
    "watermark": false,
    "optimize_prompt_options": { "mode": "standard" }
  }'

string

required

Must be seedream-5-0-lite-260128.

string

required

The image-generation prompt.

string

2K, 3K, 4K, or a supported explicit pixel size.

integer

Random seed.

string

default:"disabled"

Use auto for sequential images or disabled for a single image.

integer

Maximum number of sequential images.

string

default:"url"

url or b64_json. URLs expire after 24 hours.

string

default:"jpeg"

png or jpeg.

boolean

default:true

Whether to add an AI-generated watermark.

string

default:"standard"

Prompt optimization mode.

Create an image

POST /v1/images/generations

cURL

curl --request POST \
  --url https://www.anyfast.ai/v1/images/generations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
    "model": "seedream-5-0-lite-260128",
    "prompt": "Replace the outfit in image one with the outfit in image two while preserving identity and pose",
    "image": [
      "https://example.com/person.png",
      "https://example.com/outfit.png"
    ],
    "size": "2K",
    "response_format": "url",
    "output_format": "png",
    "watermark": false
  }'

string

required

Must be seedream-5-0-lite-260128.

string

required

The image-editing instruction.

string | string[]

required

An image URL, Base64 data URI, or up to 14 reference images.

string

2K, 3K, 4K, or a supported explicit pixel size.

integer

Random seed.

string

default:"disabled"

Use auto for sequential images or disabled for a single image.

integer

Maximum output count. Reference and generated images together must not exceed 15.

string

default:"url"

url or b64_json. URLs expire after 24 hours.

string

default:"jpeg"

png or jpeg.

boolean

default:true

Whether to add an AI-generated watermark.

string

default:"standard"

Prompt optimization mode.

Supported formats are jpeg, png, webp, bmp, tiff, gif, heic, and heif. Each image must be at most 30 MB, have an aspect ratio in [1/16, 16], have both dimensions greater than 14 px, and contain no more than 36,000,000 pixels.

Headers

string

required

Bearer authentication in the form Bearer <token>.

string

default:"application/json"

required

Request body format.

Response

200

{
  "model": "seedream-5-0-lite-260128",
  "created": 1775029815,
  "data": [{
    "url": "https://example.com/generated-image.png",
    "size": "2048x2048"
  }],
  "usage": {
    "generated_images": 1,
    "output_tokens": 16384,
    "total_tokens": 16384
  }
}

string

The model ID used for the request.

integer

Creation time as a Unix timestamp in seconds.

object[]

Generated images.

string

Temporary image URL when response_format is url.

string

Base64 image data when response_format is b64_json.

string

Generated image dimensions.

integer

Number of generated images.

integer

Output token count.

integer

Total token count.

Error responses

Error responses use an error object with code, message, and type fields.

object

Error information.

string

Machine-readable error code.

string

Human-readable error message.

string

Error category.

Invalid request or unsupported parameter value.

{ "error": { "code": "invalid_request_error", "message": "Invalid request parameter", "type": "invalid_request_error" } }

Missing or invalid API key.

{ "error": { "code": "unauthorized", "message": "Invalid API key", "type": "authentication_error" } }

Rate limit exceeded.

{ "error": { "code": "rate_limit_exceeded", "message": "Rate limit exceeded", "type": "rate_limit_error" } }

Overview

Native Compatible Endpoints

Model APIs

seedream-5.0-lite

Create an image

Create an image

Headers

Response

Error responses

​Create an image

​Create an image

​Headers

​Response

​Error responses

Create an image

Create an image

Headers

Response

Error responses