The authors investigate the experience of using artificial intelligence (AI) in law firms’ activities globally. During the research, it was revealed that: (1) Legal Tech is a branch of business specializing in information technology services for professional legal activities and providing consumers with legal services using information technologies; (2) there is no single list of Legal Tech; lawyers, theorists, and practitioners present Legal Tech classifications based on various criteria; (3) according to the authors of this monograph, currently the primary technologies are (a) “predict courts’ decisions” or “prediction technology” and (b) “predictive coding”; (4) the recognized advantage of using AI tools in legal practice is efficiency-increasing capacity. The future of AI technology will give legal practitioners a competitive edge in litigation, enabling them to serve their clients better. Law firms that use AI will be more in demand, and firms unable to automate their activities may lose clients due to higher prices for the same services. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.