This document discusses several popular programming languages used for artificial intelligence (AI), including their advantages and disadvantages. It covers Python, Prolog, C++, Java, and LISP. Python is highlighted as being very encouraging for machine learning due to its simplicity. C++ is noted as the fastest language but also the most complex. Prolog is rule-based and suitable for knowledge representation. Java is very portable but slower than C++. LISP is flexible and fast for prototyping but has fewer developers and requires configuration.