The basics
Artificial intelligence (AI) is software that does tasks that usually need human thinking, like recognizing faces, understanding speech, or making decisions.
AI is a broad label, not one single invention. It covers any program that seems to think: sorting your photos, suggesting the next word as you type, spotting fraud on a bank card, or holding a conversation. The word 'intelligence' is about what the software can do, not about how it feels inside. It does not think the way you do.
Most modern AI works by learning from examples instead of following hand-written rules. Programmers used to write every step. Today they show a system millions of examples and let it find patterns on its own. That approach is called machine learning, and it is the engine behind almost every AI you meet.
People often picture robots from films. Real AI is mostly invisible software running on phones and servers. It is usually narrow: a system that plays chess brilliantly cannot drive a car. 'AI' in the news almost always means one of these narrow, learned systems.
When your phone unlocks by looking at your face, an AI system is comparing the camera image to a stored pattern of your features in a fraction of a second.