Reactive - Reactive AI is a type of AI that is designed to respond to specific situations and based on current input data without the need for previous data or context. Reactive UI has no memory, so it can't learn from past experiences, and it can't predict the future at the same time. Instead, it reacts to the current situation according to a set of pre-defined rules or algorithms.

Memory-Limited - Memory-Limited AI is a type of AI that has a short-term memory. She can learn from immediate past experiences to excel in a particular role, but she cannot create a detailed record of her previous experiences. These machines have a static memory for storing a specific representation of the world relevant to their task, and a dynamic memory in which they store only immediate past experiences or short-term memories.

Theory of Mind - Such a UI does not currently exist, but research into its possibilities is ongoing. It describes an artificial intelligence that can mimic the human mind and has the same decision-making abilities as a human, including recognizing and remembering emotions and reacting in social situations in the same way as a human.

Self-aware - A step above theory of mind, AI describes a mythical machine that is aware of its own existence and has the intellectual and emotional capabilities of a human. Like AI with a theory of mind, AI with its own consciousness does not currently exist.

A more useful way to broadly divide the types of artificial intelligence is by what the machine can do. Everything that we currently call artificial intelligence is considered artificial "narrow" intelligence in the sense that an algorithm is able to perform only a specific type of activity based on its programming and training. An example of such a UI is an algorithm that is used to classify objects, because it will not be able to perform, for example, natural language processing. The Google search engine is also a form of narrow artificial intelligence, just like predictive analysis or virtual assistants.

Artificial General Intelligence (AGI) would be the ability of a machine to perceive, think and act just like a human. AGI does not currently exist. The next higher level would be Artificial Super Intelligence (ASI), where a machine would be able to perform better than a human in all respects.[O34]