Seedream 5.0 Pro i2i

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Key capabilities

• Image-to-image — Pass one reference image with a prompt to edit or regenerate an image.
• Multi-reference image generation — Pass up to 10 reference images with a prompt.
• Interactive editing — Use natural language, marked regions, points, bounding boxes, arrows, or annotations to control where edits happen.
• Native multilingual text — Generate text in languages such as Russian, Arabic, Filipino, Thai, Turkish, Korean, Malay, Spanish, Portuguese, Indonesian, French, German, Vietnamese, and Japanese.
• Output control — Use size, response_format, output_format, and watermark to control the generated image.

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Quick example

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "Edit the marked area and add a ceramic coffee cup with a saucer. Remove sketch lines and keep the original composition.",
    "image": "https://example.com/marked-reference.png",
    "size": "2K",
    "output_format": "png",
    "watermark": false
  }'

{
  "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"
}

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Input image limits

• Supported formats: jpeg, png, webp, bmp, tiff, gif, heic, and heif.
• Each image must be no larger than 30 MB.
• Aspect ratio must be between 1/16 and 16.
• Width and height must each be at least 14px.
• Total pixels must be no more than 6000x6000 = 36,000,000 px.
• You can pass up to 10 reference images.

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Parameters

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Size notes

• Resolution tiers: 1K and 2K. Describe the aspect ratio in the prompt when using a tier.
• Explicit pixels: widthxheight, such as 2048x1024. The official total pixel range is from 1280x720 to 2048x2048x1.1025, and the aspect ratio range is [1/16, 16].