Having been catapulted into public discourse in the last few years, this book serves as an in-depth exploration of the ever-evolving domain of Artificial Intelligence, Large Language Models and ChatGPT. It provides a meticulous and thorough analysis of Artificial Intelligence (AI), ChatGPT technology, and their prospective trajectories given the current trend, in addition to tracing the significant advancements that have materialized over time. First of all, this is a textbook that can be used for teaching in the classes at the undergraduate or graduate levels. It can also be used as a reference source. This book serves as an in-depth exploration of the ever-evolving domain of Artificial Intelligence (AI) and ChatGPT chatbot. It provides a meticulous and thorough analysis of AI, ChatGPT technology, and their prospective trajectories given the current trend, in addition to tracing the significant advancements that have materialized over time. Designed to cater to a discerning audience, this book is meticulously crafted for research practitioners, encompassing a wide spectrum of individuals from erudite academics to seasoned industry professionals who are actively engaged in the vibrant field of AI. Amidst the rapid transformation of the AI landscape, this book proffers a well-structured introduction to the field’s future prospects, emerging trends, and the complex challenges it faces. It imparts to the reader a comprehensive understanding essential for skillfully navigating the intricate realm of AI and Chat Robots (chatterbots or chatbots).