This is AI app which gives answers to all the questions entered by the users. OpenAI API are used here to do the NLP processing. The frontEnd part is simply handles by HTML , CSS , Js. For API NodeJs is used here. The prompt added by the user in the form is taken and that prompt is then send to OpenAI server through the OpenAI API. https://platform.openai.com/docs/introduction refer to this link if want to know more about OpenAI API.