gemini-3 图片生成API [含4K]

2K图片

请求

https://ai.burncloud.com/v1/chat/completions

{
  "model": "gemini-3-pro-image-preview",
  "messages": [
    {
      "role": "user",
      "content": "Generate a visualization of the current weather in Tokyo."
    }
  ],
 "aspectRatio": "16:9",
  "imageSize": "2K"
}

4K图片

请求

https://ai.burncloud.com/v1beta/models/gemini-3-pro-image-preview:generateContent?key=sk-xxxxxxxxxxxxxxxxxxx' 
{
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "text": "画条狗"
                }
            ]
        }
    ]
    , "generationConfig": {
        "temperature": 1
        ,"maxOutputTokens": 32768
        ,"responseModalities": ["TEXT", "IMAGE"]
        ,"topP": 0.95
        ,"imageConfig": {
            "aspectRatio": "1:1"
            ,"imageSize": "4K"
            ,"imageOutputOptions": {
                "mimeType": "image/png"
            }
            ,"personGeneration": "ALLOW_ALL"
        }
    }
}

参考图生图，改图，还是沿用上面的代码，只是修改以下部分content部分：

{
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "text": "画条狗"
                },
                {
                  "fileData": {
                    "mimeType": "image/jpeg",
                    "fileUri": "https://pic.zetatechs.com/i/2025/01/06/677bbb1f2411d.webp"
                  }
                }
            ]
        }
    ]

获取图片，请看返回结果，拿图片的base64