Artificial intelligence (AI) is a field of computer science that focuses on creating computer systems capable of performing tasks that require human intelligence, such as pattern recognition, learning, and decision-making.

There are different types of AI, such as weak AI, which performs specific tasks, and strong AI, which is capable of any intellectual task that a human can perform. AI is also classified based on the degree of autonomy the systems have, which can range from complete autonomy to constant human supervision.

AI has been used in a wide variety of fields, including robotics, natural language processing, computer vision, and gaming. It has also been used to improve efficiency in industrial tasks and to create personal assistance systems, such as virtual assistants.

As AI advances, it raises important ethical and philosophical questions about the relationship between humans and technology. Some experts worry about AI surpassing humans in terms of intelligence and ability, while others see AI as an opportunity to improve human life and solve global problems.

In any case, AI is a constantly evolving field and its impact on society and the world at large will continue to be a topic of debate and discussion for the foreseeable future.