This paper provides an overview of Generative Pretrained Transformer (GPT) and its application in academic libraries. Utilizing a qualitative approach to content analysis, this study synthesizes existing scholarship and addresses gaps in the literature. The scope and utility of ChatGPT in academic libraries are explored, revealing its potential to function as an intelligent virtual librarian. ChatGPT's implementation can alleviate the workload of librarians and effectively address complex queries from patrons. Additionally, the study highlights ChatGPT's ability to offer personalized assistance and research guidance through its natural language processing capabilities, enabling seamless communication with users. ChatGPT aids patrons in discovering resources that would typically demand significant effort from library staff. Despite its advantages, the study identifies areas for improvement, such as data security, dependence on technology, and the risk of providing incomplete or inaccurate information on specialized and complex topics. Nonetheless, ChatGPT emerges as a noteworthy tool for academic libraries in the current century. This paper contributes valuable insights into ChatGPT and offers practical guidelines for library practitioners globally. The content is derived from peer-reviewed research and serves as a comprehensive resource for librarians worldwide.