POST /v1beta/models/{model}:generateContent

curl "https://api.crazyrouter.com/v1beta/models/gemini-3.1-pro:generateContent?key=YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "inlineData": {
              "mimeType": "image/png",
              "data": "BASE64_PNG_DATA"
            }
          },
          {
            "text": "请用一句中文描述这张图片里有什么。"
          }
        ]
      }
    ]
  }'

{
  "candidates": [
    {
      "content": {
        "parts": [
          {
            "text": "这张图片展示了多种鲜艳色彩平滑过渡的渐变效果。"
          }
        ]
      }
    }
  ]
}