Sinan Ozdemir is an AI expert, educator, and entrepreneur with an master's degree in pure mathematics from Johns Hopkins University, where he also lectured. He founded and exited Kylie.ai where he patented Agentic tool use in 2018, served as the Director of Data Science at the acquitting company for many years, and went through Y Combinator. Sinan has authored multiple practical AI books and popular video courses for O'Reilly, Pearson, and others, and co-hosts the Practically Intelligent podcast. His Quick Start Guide to Large Language Models, Second Edition, is a leading resource on AI and LLMs.