Chatbots are Classified into 2 (Two) Types:-
2.1. Linguistic Based/ Rule Based:
This category of chatbots simply follows the rule or algorithm to answer any question/ query asked by the user. These are simple bots that they can reply only to the set of questions that have been pre-programmed within it. Thus the bot can’t answer more naturally and the intelligence of these types of bots completely depended on the programmer who designed them. It is created by literal hard-coding (generally if/else/then logics).
There are many advantages of using rule-based chatbots: they are not expensive, easy to handle, easy integration, highly secure and accountable, can include interactive elements like images, videos &, etc.
2.2. AI Chatbots:
AI chatbots that use machine learning to be more specific are generally made using NLP (Natural Language Processing)technique, they understand the context and intention of a question before replying or taking any actions. These chatbots generate their own answers to more complicated questions using natural-language responses. The more you use and train these bot, the more they learn and more they become smart with close-to-real kinds of replies.
The advantages here are: They are smart, They learn from information and experiences, relatively more natural replies, a broader range of decision-making skills &, etc.