curl https://aihubmix.com/v1/chat/completions \
  -H "Authorization: Bearer AIHUBMIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d "{\"model\": \"gpt-3.5-turbo\",\"messages\": [{\"role\": \"user\", \"content\": \"你好\"}]}"

{
  "choices": [
    {
      "message": {
        "role": "<string>",
        "content": "<string>"
      },
      "finish_reason": "<string>"
    }
  ],
  "usage": {
    "prompt_tokens": 123,
    "completion_tokens": 123,
    "total_tokens": 123
  }
}