图像生成 (原生 API)

POST /gemini/v1beta/models/{model}:generateContent

curl -X POST "$BASE_URL/gemini/v1beta/models/gemini-3-pro-image-preview:generateContent" \
  -H "x-goog-api-key: $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{
      "parts": [{
        "text": "一只熊猫在图书馆看书，赛博朋克风格"
      }]
    }],
    "generationConfig": {
      "responseModalities": ["image", "text"],
      "imageConfig": {
        "aspectRatio": "1:1",
        "imageSize": "2K"
      }
    }
  }'

{
  "contents": [{
    "parts": [
      {
        "text": "将这张图片转换为油画风格"
      },
      {
        "inline_data": {
          "mime_type": "image/jpeg",
          "data": "<BASE64_IMAGE_DATA>"
        }
      }
    ]
  }],
  "generationConfig": {
    "responseModalities": ["image", "text"],
    "imageConfig": {
      "aspectRatio": "1:1",
      "imageSize": "2K"
    }
  }
}

{
  "contents": [{
    "parts": [
      {"text": "基于第一张图的构图，参考第二张的色调风格"},
      {"inline_data": {"mime_type": "image/jpeg", "data": "<BASE64_BASE_IMAGE>"}},
      {"inline_data": {"mime_type": "image/jpeg", "data": "<BASE64_STYLE_IMAGE>"}}
    ]
  }],
  "generationConfig": {
    "responseModalities": ["image", "text"],
    "imageConfig": {"aspectRatio": "1:1", "imageSize": "2K"}
  }
}

{
  "candidates": [{
    "content": {
      "parts": [
        {
          "inlineData": {
            "mimeType": "image/png",
            "data": "<BASE64_IMAGE_DATA>"
          }
        },
        {
          "text": "生成完成的描述文本（可选）"
        }
      ]
    }
  }],
  "usageMetadata": {
    "promptTokenCount": 50,
    "candidatesTokenCount": 100,
    "totalTokenCount": 150
  }
}