https://blog.wongcw.com/2023/03/11/%e5%be%ae%e8%bb%9f%e5%b0%87chatgpt%e9%9b%86%e6%88%90%e5%88%b0azure-openai%e6%9c%8d%e5%8b%99%e4%b8%ad%e6%af%8f1000%e5%80%8btoken%e5%ae%9a%e5%83%b90-002%e7%be%8e%e5%85%83/