What Is A Chatbot? Everything You Need To Know Forbes Advisor INDIA The big difference is that using Replika involves building an AI persona that fits into the more traditional, “companion”-style model. It can be built to almost “mirror” a user and even has therapeutic benefits. Character AI, on the other hand, lets users interact with chatbots that respond “in character”. However, it’s just not as advanced (or as fun) as Character AI, which is why it didn’t make our shortlist. Like Character AI, Replika AI is a