中文译文
我想了解各种免费使用、且公认安全的 AI 和网站，用于编写代码、运行代码以及撰写专业提示词。
English original
I want to learn about various ai and websites which are free to use and knownly safe for making code to running code and writing professional prompt
学习免费AI网站提示词，哪个最实用
Prompt to learn free AI website which will be most useful for me to use for free