Chat格式传图片Base64

curl --location --request POST 'https://api.ppaicode.com/v1/chat/completions' \
--header 'Authorization: Bearer $OPENAI_API_KEY' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "gpt-4.1-mini",
    "messages": [
      {
        "role": "user",
        "content": [
          {
            "type": "text",
            "text": "What is in this image?"
          },
          {
            "type": "image_url",
            "image_url": {
              "url": "data:image/jpeg;base64,$BASE64_IMAGE"
            }
          }
        ]
      }
    ],
    "max_tokens": 300
  }'