Seedream 5.0 Pro

Use ByteDance Seedream 5.0 Pro through AnyFast for text-to-image generation, image editing, and multi-image reference.

Seedream 5.0 Pro is ByteDance’s high-precision image generation and editing model, available through the AnyFast API. Use model ID doubao-seedream-5-0-pro-260628.

For specific content requests, select the Special-Ns resource group.

Seedream 5.0 Pro does not support grouped image generation, web search, or streaming. Do not send sequential_image_generation, sequential_image_generation_options, tools, or stream.

Key capabilities

• Text to image — Generate a high-precision image from text
• Image to image — Edit references and combine content from multiple images
• Interactive editing — Use natural language, marked regions, points, bounding boxes, arrows, and annotations
• Multilingual text — Generate text in Russian, Arabic, Filipino, Thai, Turkish, Korean, Malay, Spanish, Portuguese, Indonesian, French, German, Vietnamese, Japanese, and other supported languages
• Output control — Configure size, response format, image format, and watermark

Text to image

Quick example

cURL

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "A high-end product hero image for a smart speaker, precise lighting, clean editorial layout",
    "size": "2K",
    "output_format": "png",
    "watermark": false
  }'

Parameter	Type	Required	Description
model	string	Yes	Must be doubao-seedream-5-0-pro-260628
prompt	string	Yes	Image generation prompt. Keep it concise enough that important details are not diluted.
size	string	No	1K, 2K, or explicit pixels such as 2048x1024
response_format	string	No	url or b64_json; default url
output_format	string	No	png or jpeg; default jpeg
watermark	boolean	No	Whether to add an AI-generated watermark
optimize_prompt_options.mode	string	No	Use standard

Image to image

Quick example

cURL

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer <token>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "Add a ceramic coffee cup to the marked area and preserve the original composition",
    "image": "https://example.com/marked-reference.png",
    "size": "2K",
    "output_format": "png",
    "watermark": false
  }'

Use <point> or <bbox> tags in the prompt for coordinate-based editing. image accepts a URL, Base64 data URI, or an array of up to 10 references.

Coordinate-based edit

{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "Place the subject from image 1 <bbox>179 283 796 986</bbox> into image 2 <bbox>118 331 933 871</bbox>.",
  "image": [
    "https://example.com/source.png",
    "https://example.com/target.png"
  ],
  "size": "2K",
  "output_format": "png"
}

Parameter	Type	Required	Description
model	string	Yes	Must be doubao-seedream-5-0-pro-260628
prompt	string	Yes	Image editing or reference-generation instruction. Keep it concise enough that important details are not diluted.
image	string or array	Yes	URL, Base64 data URI, or up to 10 references
size	string	No	1K, 2K, or explicit pixels
response_format	string	No	url or b64_json
output_format	string	No	png or jpeg
watermark	boolean	No	Whether to add an AI-generated watermark
optimize_prompt_options.mode	string	No	Prompt optimization mode. Use standard; fast mode is not supported.

Input limits

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

Size notes

Use 1K or 2K resolution tiers and describe the desired aspect ratio in the prompt, or pass an explicit widthxheight value such as 2048x1024. Explicit dimensions must have a total pixel count from 1280x720 through 2048x2048x1.1025 and an aspect ratio in [1/16, 16].

When response_format is url, the returned URL is temporary. Save the generated image promptly.

API Reference

View both Seedream 5.0 Pro workflows.