图像理解

注意：仅支持 Base64 内联图片，不支持图片 URL。

Python

import base64
from openai import OpenAI

client = OpenAI(api_key="your-api-key", base_url="https://www.cheapertoken.work/v1")

with open("image.jpg", "rb") as f:
    image_data = base64.b64encode(f.read()).decode("utf-8")

response = client.chat.completions.create(
    model="gemini-2.5-flash",
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "image_url", "image_url": {"url": f"data:image/jpeg;base64,{image_data}"}},
                {"type": "text", "text": "请描述这张图片"},
            ],
        }
    ],
)
print(response.choices[0].message.content)

JavaScript

import OpenAI from "openai";
import fs from "fs";

const client = new OpenAI({ apiKey: "your-api-key", baseURL: "https://www.cheapertoken.work/v1" });

const imageData = fs.readFileSync("image.jpg").toString("base64");

const response = await client.chat.completions.create({
  model: "gemini-2.5-flash",
  messages: [
    {
      role: "user",
      content: [
        { type: "image_url", image_url: { url: `data:image/jpeg;base64,${imageData}` } },
        { type: "text", text: "请描述这张图片" },
      ],
    },
  ],
});
console.log(response.choices[0].message.content);

curl

IMAGE_BASE64=$(base64 -w 0 image.jpg)

curl https://www.cheapertoken.work/v1/chat/completions \
  -H "Authorization: Bearer your-api-key" \
  -H "Content-Type: application/json" \
  -d "{
    \"model\": \"gemini-2.5-flash\",
    \"messages\": [{
      \"role\": \"user\",
      \"content\": [
        {\"type\": \"image_url\", \"image_url\": {\"url\": \"data:image/jpeg;base64,${IMAGE_BASE64}\"}},
        {\"type\": \"text\", \"text\": \"请描述这张图片\"}
      ]
    }]
  }"