gemini-3.1-flash-lite-image 生图 API
curl --request POST \
--url https://www.geeknow.top/v1beta/models/{model}:generateContent \
--header 'Authorization: Bearer <token>'import requests
url = "https://www.geeknow.top/v1beta/models/{model}:generateContent"
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
fetch('https://www.geeknow.top/v1beta/models/{model}:generateContent', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://www.geeknow.top/v1beta/models/{model}:generateContent",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://www.geeknow.top/v1beta/models/{model}:generateContent"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://www.geeknow.top/v1beta/models/{model}:generateContent")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.geeknow.top/v1beta/models/{model}:generateContent")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodyGemini 图像生成
gemini-3.1-flash-lite-image 生图 API
使用 POST /v1beta/models/gemini-3.1-flash-lite-image:generateContent 调用 Gemini 官方格式生图接口。
POST
https://www.geeknow.top
/
v1beta
/
models
/
{model}
:generateContent
gemini-3.1-flash-lite-image 生图 API
curl --request POST \
--url https://www.geeknow.top/v1beta/models/{model}:generateContent \
--header 'Authorization: Bearer <token>'import requests
url = "https://www.geeknow.top/v1beta/models/{model}:generateContent"
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
fetch('https://www.geeknow.top/v1beta/models/{model}:generateContent', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://www.geeknow.top/v1beta/models/{model}:generateContent",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://www.geeknow.top/v1beta/models/{model}:generateContent"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://www.geeknow.top/v1beta/models/{model}:generateContent")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.geeknow.top/v1beta/models/{model}:generateContent")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_bodygemini-3.1-flash-lite-image 生图 API
这个模型使用 Gemini 官方generateContent 格式生图,适合直接复用 contents / parts 结构。
- 路径为
POST /v1beta/models/{model}:generateContent。 model固定传gemini-3.1-flash-lite-image。- 文生图和图生图都使用同一套
contents[].parts[]。 - 这个模型会实际回落为
1K;即使请求中传2K,最终也会按1K处理。 - 返回里既可能直接给
inlineData.dataBase64,也可能给图片 URL。
先看懂图生图
Gemini 这里的图生图,不是换一条 API,而是继续用generateContent:
- 用
parts[].text写提示词 - 用
parts[].inlineData塞参考图
图生图最小示例
{
"contents": [
{
"role": "user",
"parts": [
{ "text": "根据参考图做一张轻量快速版本的产品宣传图" },
{
"inlineData": {
"mimeType": "image/png",
"data": "BASE64_IMAGE"
}
}
]
}
],
"generationConfig": {
"responseModalities": ["TEXT", "IMAGE"],
"imageConfig": {
"aspectRatio": "4:3",
"imageSize": "1K"
}
}
}
方法与路径
POST /v1beta/models/gemini-3.1-flash-lite-image:generateContent
请求示例
curl -X POST https://www.geeknow.top/v1beta/models/gemini-3.1-flash-lite-image:generateContent \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
-d '{
"contents": [
{
"role": "user",
"parts": [
{ "text": "一张轻量快速生成的极简科技海报,白底,蓝黑线条,信息图风格" }
]
}
],
"generationConfig": {
"responseModalities": ["TEXT", "IMAGE"],
"imageConfig": {
"aspectRatio": "4:3",
"imageSize": "1K"
}
}
}'
关键字段
| 字段 | 说明 |
|---|---|
contents[].parts[].text | 文本提示词 |
contents[].parts[].inlineData | 参考图输入 |
generationConfig.responseModalities | 建议使用 ["IMAGE", "TEXT"] |
generationConfig.imageConfig.aspectRatio | 图片比例 |
generationConfig.imageConfig.imageSize | 图片清晰度 |
图生图字段解释
| 字段 | 图生图里的作用 |
|---|---|
parts[].text | 告诉模型要输出什么样的图 |
parts[].inlineData.mimeType | 声明参考图类型 |
parts[].inlineData.data | 参考图 Base64 内容 |
imageConfig.aspectRatio | 控制出图比例 |
imageConfig.imageSize | 控制出图清晰度 |
返回后怎么看图片
通常看这里:candidates[0].content.parts[].inlineData.data
- Base64 图片数据
- 图片 URL
这个模型会把请求中的
imageSize 按 1K 处理;即使请求或示例中填写 2K,最终也会回落为 1K。响应示例
{
"candidates": [
{
"content": {
"role": "model",
"parts": [
{
"inlineData": {
"mimeType": "image/png",
"data": "BASE64_OR_URL"
}
}
]
},
"finishReason": "STOP"
}
],
"usageMetadata": {
"promptTokenCount": 110,
"candidatesTokenCount": 320,
"totalTokenCount": 430
}
}
异步调用
gemini-3.1-flash-lite-image 也支持通过统一图像异步入口提交任务:
POST /v1/images/generations/async
id / task_id,再通过 GET /v1/images/generations/async/{taskId} 查询状态和结果。