AI entities are computer programs or systems designed to perform tasks that typically require human intelligence. These tasks can include understanding natural language, recognizing images, making decisions, and solving problems. AI entities can be found in various applications, such as virtual assistants like Siri or Alexa, and in industries like healthcare and finance. These entities operate using algorithms and large datasets to learn from experience, improving their performance over time. They can be classified into two main types: narrow AI, which is specialized for specific tasks, and general AI, which aims to perform any intellectual task that a human can do.