gemini-3-pro-preview / image-to-text

curl --location 'https://gptproto.com/v1beta/models/gemini-3-pro-preview:generateContent' \
--header 'Authorization: Bearer sk-***********' \
--header 'Content-Type: application/json' \
--data '{
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "text": "这张图片里有什么？"
                },
                {
                    "inlineData": {
                        "mimeType": "image/jpeg",
                        "data": "${base64Image}"
                    }
                }
            ]
        }
    ],
    "generationConfig": {
        "temperature": 0.3
    },
    "safetySettings": [
        {
            "category": "HARM_CATEGORY_HARASSMENT",
            "threshold": "BLOCK_MEDIUM_AND_ABOVE"
        },
        {
            "category": "HARM_CATEGORY_HATE_SPEECH",
            "threshold": "BLOCK_MEDIUM_AND_ABOVE"
        }
    ]
}'