The programming language known for its application in artificial intelligence is Python. Python's simplicity and readability make it accessible for both beginners and experienced developers. It offers extensive libraries and frameworks, such as TensorFlow, Keras, and Scikit-learn, which facilitate machine learning, natural language processing, and data analysis. These tools enable developers to implement complex AI algorithms efficiently. Additionally, Python’s community support and versatility across various domains enhance its popularity for AI projects, making it a favored choice among practitioners and researchers in the field.