gemini-3.1-flash-image-preview(nano banana 2) （文生图）模型接口
POST
/v1beta/models/gemini-3.1-flash-image-preview:generateContent
请求参数
Header 参数
Body 参数application/json
示例
{
"contents": [{
"parts": [
{"text": "Create a picture of a nano banana dish in a fancy restaurant with a Gemini theme"}//输入想要的内容
]
}],
"generationConfig": {
"imageConfig": {
"aspectRatio": "16:9", // 纵横比例 "1:1","1:4","1:8","2:3","3:2","3:4","4:1","4:3","4:5","5:4","8:1","9:16","16:9","21:9"
"imageSize": "05.K" // 分辨率 "512px", "1K", "2K", "4K"
}
}
}请求示例代码
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请求示例请求示例
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curl --location '/v1beta/models/gemini-3.1-flash-image-preview:generateContent' \
--header 'Authorization: sk-6R1K' \
--header 'Content-Type: application/json' \
--data '{
"contents": [{
"parts": [
{"text": "Create a picture of a nano banana dish in a fancy restaurant with a Gemini theme"}//输入想要的内容
]
}],
"generationConfig": {
"imageConfig": {
"aspectRatio": "16:9", // 纵横比例 "1:1","1:4","1:8","2:3","3:2","3:4","4:1","4:3","4:5","5:4","8:1","9:16","16:9","21:9"
"imageSize": "05.K" // 分辨率 "512px", "1K", "2K", "4K"
}
}
}'返回响应
🟢200成功
application/json
Bodyapplication/json
示例
{
"candidates": [
{
"content": {
"parts": [
{
"inlineData": {
"mimeType": "image/png",
"data": "aaaaa"
},
"thoughtSignature": "aaaaaaaaaa"
}
],
"role": "model"
},
"finishReason": "STOP",
"index": 0
}
],
"usageMetadata": {
"promptTokenCount": 17,
"candidatesTokenCount": 1551,
"totalTokenCount": 1568,
"promptTokensDetails": [
{
"modality": "TEXT",
"tokenCount": 17
}
],
"candidatesTokensDetails": [
{
"modality": "IMAGE",
"tokenCount": 1120
}
]
},
"modelVersion": "gemini-3.1-flash-image-preview",
"responseId": "lkWiaeiSLdumjMcP4vfT4Q4"
}修改于 2026-04-28 14:58:35