Reactive Machines – Analyzes a set of actions/moves and choses the most strategic move. No Memory, cant use past experiences to inform future ones.
Limited Memory – Uses past experiences & observations to inform future decisions but not-so-distant future. These observations are not saved permanently.
Theory of Mind – The psychology of understanding that others have their own beliefs , desires and intentions that impact the decisions they make. This kind of AI is still evolving
Self-awareness – These AI systems have a sense of self and consciousness. They understand their current state and can use the info to infer what others are feeling. This kind of AI is still evolving.