AI systems, or artificial intelligence systems, are computer programs designed to perform tasks that typically require human intelligence. These tasks can include understanding language, recognizing images, making decisions, and solving problems. AI systems use algorithms and large amounts of data to learn from experience and improve their performance over time. There are various types of AI systems, including machine learning, natural language processing, and computer vision. Machine learning allows systems to learn patterns from data, while natural language processing enables them to understand and generate human language. Computer vision helps AI systems interpret and analyze visual information from the world around them.