GPT Image 1.5 迁移到 GPT Image 2：参数与结果保存

curl --fail-with-body --silent --show-error \
  https://api.apizt.com/v1/images/generations \
  -H "Authorization: Bearer $tokenba_API_KEY" \
  -H "Content-Type: application/json" \
  --data '{
    "model": "gpt-image-2",
    "prompt": "A single blue whale on a clean cream studio background, no text.",
    "n": 1,
    "size": "1024x1024",
    "quality": "low",
    "output_format": "png"
  }' \
  --output migration-generation.json

curl --fail-with-body --silent --show-error \
  https://api.apizt.com/v1/images/edits \
  -H "Authorization: Bearer $tokenba_API_KEY" \
  -F "model=gpt-image-2" \
  -F "image=@./input.png" \
  -F "prompt=Keep the subject's color, shape, details, quantity and proportions unchanged. Replace only the background with a clean cream studio wall and soft side light. Do not add text or new objects." \
  -F "n=1" \
  -F "size=1024x1024" \
  -F "quality=low" \
  -F "output_format=png" \
  --output migration-edit.json

python3 - <<'PY'
import base64
import json
from pathlib import Path

response = json.loads(Path("migration-edit.json").read_text())
if response.get("error"):
    raise SystemExit("接口返回错误，请先检查响应中的 error 字段。")
data = response.get("data") or []
encoded = data[0].get("b64_json") if data else None
if not encoded:
    raise SystemExit("未返回 b64_json，请核对通道返回格式。")
image = base64.b64decode(encoded, validate=True)
if not image.startswith(b"\x89PNG\r\n\x1a\n"):
    raise SystemExit("返回内容不是 PNG，请核对实际输出格式。")
with Path("migration-edited.png").open("xb") as output:
    output.write(image)
print("已保存 migration-edited.png；打开图片检查尺寸与主体细节。")
PY