Seedream 5.5 APIの使い方と料金：透過PNGとレイヤー分解、1枚$0.035

curl --fail-with-body --max-time 180 "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedream-5-5-261028",
    "prompt": "A cozy bookstore window at night with warm light, a cat sleeping on a stack of books, and a hand-lettered sign that reads \"OPEN LATE\"",
    "size": "2K",
    "watermark": false
  }' \
  -o seedream55-generate.json

python3 save_seedream.py seedream55-generate.json bookstore

import os
from pathlib import Path

import requests

response = requests.post(
    "https://api.laozhang.ai/v1/images/generations",
    headers={"Authorization": f"Bearer {os.environ['LAOZHANG_API_KEY']}"},
    json={
        "model": "seedream-5-5-261028",
        "prompt": (
            "A cozy bookstore window at night with warm light, a cat sleeping "
            'on a stack of books, and a hand-lettered sign that reads "OPEN LATE"'
        ),
        "size": "2K",
        "watermark": False,
    },
    timeout=180,
)
response.raise_for_status()
item = response.json()["data"][0]

# URLは一時的なリンクなので、受け取ったらすぐにダウンロードする
download = requests.get(item["url"], timeout=120)
download.raise_for_status()

# 拡張子はレスポンスの output_format に合わせる（既定値は png）
extension = "jpg" if item.get("output_format", "png") == "jpeg" else "png"
output = Path(f"bookstore.{extension}")
output.write_bytes(download.content)
print(f"保存しました: {output}")

curl --fail-with-body --max-time 180 "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedream-5-5-261028",
    "prompt": "A ceramic coffee mug with small blue flowers, product shot",
    "background": "transparent",
    "output_format": "png",
    "size": "1K",
    "watermark": false
  }' \
  -o seedream55-mug.json

python3 save_seedream.py seedream55-mug.json mug
python3 -c "from PIL import Image; print(Image.open('mug-1.png').mode)"

IMG1=$(base64 < product.png | tr -d '\n')
IMG2=$(base64 < scene.jpg | tr -d '\n')

curl --fail-with-body --max-time 180 "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- \
  -o seedream55-edit.json <<EOF
{
  "model": "seedream-5-5-261028",
  "prompt": "Place the product from image 1 on the table in image 2. Keep the product's shape, label and colors unchanged, and match the lighting of image 2.",
  "image": [
    "data:image/png;base64,$IMG1",
    "data:image/jpeg;base64,$IMG2"
  ],
  "size": "2K",
  "watermark": false
}
EOF

python3 save_seedream.py seedream55-edit.json edit

POSTER=$(base64 < poster.png | tr -d '\n')

curl --fail-with-body --max-time 360 "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- \
  -o seedream55-layers.json <<EOF
{
  "model": "seedream-5-5-261028",
  "image": "data:image/png;base64,$POSTER",
  "layer_decomposition": true,
  "layer_decomposition_options": {
    "max_images": 6,
    "text_recognition": true
  },
  "size": "1K",
  "watermark": false
}
EOF

python3 save_seedream.py seedream55-layers.json layer

{
  "size": "1616x649",
  "output_format": "png",
  "z_index": 2,
  "bounding_box": {"absolute": [0, 0, 836, 336], "normalized": [0, 0, 1000, 268]},
  "name": "Bold uppercase text \"SUMMER\"",
  "background": "transparent",
  "text_recognition": {
    "text": "SUMMER",
    "lines": [{"runs": [{"text": "SUMMER", "style": {"similar_font_family": "TikTok Sans", "foreground_color": "#FFFFFF", "bold": true, "italic": false}}]}]
  }
}