curl 'https://ark.cn-beijing.volces.com/api/v3/bots/chat/completions' \
-H "Authorization: Bearer 168deb3d-fd0c-4912-b9f1-aaee5c6743e6"  \
-H 'Content-Type: application/json' \
-d '{
    "model": "bot-20250405211523-l7c9r", 
    "stream": true,
    "stream_options": {"include_usage": true},
    "messages": [ 
        {
            "role": "system",
            "content": "You are a helpful assistant."
        },
        {
            "role": "user",
            "content": "Hello!"
        }
    ]
}'