nano-banana-2

图像GoogleNano Banana 2nano-banana-2

进入 Playground

谷歌最具性价比的图像生成模型

鉴权与连接

Base URL: https://backend:8000
Authorization: Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
模型名 (model): nano-banana-2

接入协议

Gemini 原生推荐异步 Jobs异步

为什么选这个协议

适合原本使用 Gemini SDK 或 generateContent 接口的用户直接迁移。

接口地址

POST/v1beta/models/nano-banana-2:generateContent

Authorization: Bearer YOUR_API_KEYContent-Type: application/json

请求 / 响应 JSON

请求示例

图片链接方式fileData.fileUri

{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "修复键盘顶端斑驳痕迹，其他内容不变"
        },
        {
          "fileData": {
            "fileUri": "https://example.com/reference.png"
          }
        }
      ]
    }
  ],
  "generationConfig": {
    "imageConfig": {
      "imageSize": "1K"
    },
    "responseModalities": [
      "IMAGE"
    ]
  }
}

Base64 方式inlineData.mimeType + inlineData.data

{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "修复键盘顶端斑驳痕迹，其他内容不变"
        },
        {
          "inlineData": {
            "mimeType": "image/jpeg",
            "data": "BASE64_IMAGE_DATA"
          }
        }
      ]
    }
  ],
  "generationConfig": {
    "imageConfig": {
      "imageSize": "1K"
    },
    "responseModalities": [
      "IMAGE"
    ]
  }
}

响应示例

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "inlineData": {
              "mimeType": "image/png",
              "data": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8Xw8AAoMBgAqJvhoAAAAASUVORK5CYII="
            }
          }
        ]
      }
    }
  ],
  "modelVersion": "nano-banana-2",
  "usageMetadata": {
    "promptTokenCount": 8,
    "candidatesTokenCount": 16,
    "totalTokenCount": 24
  }
}

请求字段 / 响应字段

// INPUT SCHEMA

字段	类型	必填
contents	array	Y
contents[]	object	Y
contents[].role	string	Y
contents[].parts	array	Y
contents[].parts[]	object	Y
contents[].parts[].text	string	Y
generationConfig	object	Y
generationConfig.imageConfig	object	Y
generationConfig.imageConfig.imageSize	string	Y

// RESPONSE SCHEMA

字段	类型	必填
output.images[]	image	N

代码示例

cURLrequest.sh

curl -X POST "https://backend:8000/v1beta/models/nano-banana-2:generateContent" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "修复键盘顶端斑驳痕迹，其他内容不变"
        },
        {
          "fileData": {
            "fileUri": "https://example.com/reference.png"
          }
        }
      ]
    }
  ],
  "generationConfig": {
    "imageConfig": {
      "imageSize": "1K"
    }
  }
}'

# 上传参考文件 cURL
curl -X POST "https://backend:8000/v1/files/upload" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "kind=image" \
  -F "purpose=reference" \
  -F "file=@demo.png"

为什么选这个协议

适合需要提交任务并轮询状态的图像、视频、音频生成工作流。