is a basic type of chatbots can present decision tree hierarchies in the form of buttons. These chatbots require the user to make several selections to dig deeper towards the ultimate answer.

utilize ML and AI to remember conversations with specific users to learn and grow over time. Unlike keyword recognition-based chatbots, contextual chatbots are smart enough to self-improve based on what users are asking for and how they are asking it.

can find trigger words and respond appropriately. These chatbots utilize customizable keywords and AI to determine how to serve an appropriate response to the user.

can create personalized experience for the users. These chatbots accept user inputs through voice and act upon user request. We also can create voice-activated chatbot by using text-to-speech (TTS) and voice recognition APIs. Often using for inbound/ outbound phone calls.