Seedream API 이미지 생성·편집: 가격과 사용법

curl --fail-with-body "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedream-5-0-260128",
    "prompt": "A beautiful sunset over mountains, realistic style",
    "size": "2K",
    "response_format": "url",
    "watermark": false
  }' \
  -o seedream-generation.json

{
  "created": 1726051200,
  "data": [
    {
      "url": "https://example.com/generated_image.jpg"
    }
  ]
}

python3 save_images.py seedream-generation.json seedream-sunset

import base64
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-5-0-260128",
        "prompt": "A beautiful sunset over mountains, realistic style",
        "size": "2K",
        "response_format": "url",
        "watermark": False,
    },
    timeout=180,
)
response.raise_for_status()
item = response.json()["data"][0]

if item.get("b64_json"):
    value = item["b64_json"].split(",", 1)[-1]
    image = base64.b64decode(value + "=" * (-len(value) % 4))
else:
    download = requests.get(item["url"], timeout=120)
    download.raise_for_status()
    image = download.content

extension = "png" if image.startswith(b"\x89PNG") else "jpg"
output = Path(f"seedream-sunset.{extension}")
output.write_bytes(image)
print(f"저장 완료: {output}")

curl --fail-with-body "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedream-5-0-260128",
    "prompt": "무성한 잔디 위에 엎드려 있는 강아지를 클로즈업한 이미지를 만들어 주세요.",
    "image": "https://ark-doc.tos-ap-southeast-1.bytepluses.com/doc_image/seedream4_imageToimage.png",
    "sequential_image_generation": "disabled",
    "size": "2K",
    "response_format": "url",
    "watermark": false
  }' \
  -o seedream-edit.json

python3 save_images.py seedream-edit.json seedream-edit

IMG1=$(base64 < product.png | tr -d '\n')
IMG2=$(base64 < scene.jpg | tr -d '\n')
IMG3=$(base64 < style.jpg | tr -d '\n')

curl --fail-with-body "https://api.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- \
  -o seedream-multi-edit.json <<EOF
{
  "model": "seedream-5-0-260128",
  "prompt": "이미지 1의 제품을 이미지 2의 장면에 배치하고, 이미지 3의 조명과 색감을 적용하세요. 제품의 형태, 라벨, 색상은 그대로 유지하세요.",
  "image": [
    "data:image/png;base64,$IMG1",
    "data:image/jpeg;base64,$IMG2",
    "data:image/jpeg;base64,$IMG3"
  ],
  "sequential_image_generation": "disabled",
  "size": "2K",
  "response_format": "url",
  "watermark": false
}
EOF

python3 save_images.py seedream-multi-edit.json seedream-multi-edit

import base64
import mimetypes
import os
from pathlib import Path

import requests

API_URL = "https://api.laozhang.ai/v1/images/generations"
HEADERS = {"Authorization": f"Bearer {os.environ['LAOZHANG_API_KEY']}"}


def to_image_input(source):
    """URL은 그대로 반환하고, 로컬 파일은 data URL로 변환합니다."""
    if source.startswith(("https://", "http://", "data:")):
        return source
    path = Path(source)
    mime_type = mimetypes.guess_type(path.name)[0] or "image/png"
    encoded = base64.b64encode(path.read_bytes()).decode("ascii")
    return f"data:{mime_type};base64,{encoded}"


def seedream_edit(prompt, sources, model="seedream-5-0-260128"):
    if not 1 <= len(sources) <= 10:
        raise ValueError("Seedream 참조 이미지는 1~10장이어야 합니다")
    images = [to_image_input(source) for source in sources]
    response = requests.post(
        API_URL,
        headers=HEADERS,
        json={
            "model": model,
            "prompt": prompt,
            "image": images[0] if len(images) == 1 else images,
            "sequential_image_generation": "disabled",
            "size": "2K",
            "response_format": "url",
            "watermark": False,
        },
        timeout=180,
    )
    response.raise_for_status()
    return response.json()


def save_all_images(result, stem):
    """data[]의 모든 항목을 저장합니다. 연속 생성은 이미지를 여러 장 반환할 수 있습니다."""
    paths = []
    for number, item in enumerate(result["data"], start=1):
        if item.get("b64_json"):
            value = item["b64_json"].split(",", 1)[-1]
            image = base64.b64decode(value + "=" * (-len(value) % 4))
        else:
            download = requests.get(item["url"], timeout=120)
            download.raise_for_status()
            image = download.content
        extension = "png" if image.startswith(b"\x89PNG") else "jpg"
        path = Path(f"{stem}-{number}.{extension}")
        path.write_bytes(image)
        paths.append(path)
    return paths


result = seedream_edit(
    "이미지 1의 제품을 이미지 2의 장면에 배치하고, 이미지 3의 조명과 색감을 적용하세요. "
    "제품의 형태, 라벨, 색상은 그대로 유지하세요.",
    ["product.png", "scene.jpg", "style.jpg"],
)
for path in save_all_images(result, "seedream-python-edit"):
    print("저장 완료:", path)

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" \
  -d '{
    "model": "seedream-5-0-flash-260915",
    "image": "https://example.com/your-poster.jpg",
    "layer_decomposition": true,
    "size": "1K",
    "response_format": "url",
    "watermark": false
  }' \
  -o seedream-layers.json

{
  "data": [
    {
      "url": "https://example.com/base.jpeg",
      "size": "896x1200",
      "output_format": "jpeg",
      "z_index": 0
    },
    {
      "url": "https://example.com/layer.png",
      "size": "916x529",
      "output_format": "png",
      "z_index": 4,
      "bounding_box": {
        "absolute": [260, 716, 619, 924],
        "normalized": [290, 597, 690, 769]
      },
      "name": "Spaceship",
      "description": "Sci-fi spaceship with blue engine glow effects, separate from the background nebula."
    }
  ],
  "usage": {
    "input_images": 1,
    "generated_images": 6
  }
}

python3 save_layers.py seedream-layers.json