Nano Banana 2 Lite API

curl -X POST "https://api.laozhang.ai/v1/chat/completions" \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3.1-flash-lite-image",
    "stream": false,
    "messages": [
      {
        "role": "user",
        "content": "生成一张 1:1 的极简咖啡产品图，米白背景，柔和阴影"
      }
    ]
  }'

from openai import OpenAI

client = OpenAI(
    api_key="sk-YOUR_API_KEY",
    base_url="https://api.laozhang.ai/v1",
)

response = client.chat.completions.create(
    model="gemini-3.1-flash-lite-image",
    messages=[
        {
            "role": "user",
            "content": "生成一张适合移动端首页的清爽蓝色 SaaS 插画",
        }
    ],
)

print(response.choices[0].message.content)

POST https://api.laozhang.ai/v1beta/models/gemini-3.1-flash-lite-image:generateContent

curl -X POST \
  "https://api.laozhang.ai/v1beta/models/gemini-3.1-flash-lite-image:generateContent" \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{
      "parts": [{"text": "生成一张 16:9 的现代物流仪表盘概念图，深色背景，青色高光"}]
    }],
    "generationConfig": {
      "responseModalities": ["IMAGE"],
      "imageConfig": {
        "aspectRatio": "16:9",
        "imageSize": "1K"
      }
    }
  }'

response = client.chat.completions.create(
    model="gemini-3.1-flash-lite-image",
    messages=[{
        "role": "user",
        "content": [
            {"type": "text", "text": "保持产品不变，把背景替换成浅灰色摄影棚"},
            {
                "type": "image_url",
                "image_url": {"url": "https://example.com/product.jpg"},
            },
        ],
    }],
)