Chat GPT is a form of natural language processing (NLP) technology. It works by using a deep neural network, which is a type of artificial intelligence (AI) system that can understand natural language. The neural network is trained on a large corpus of text, such as the works of Shakespeare or Wikipedia articles, to learn the patterns of language. The chatbot then uses this information to generate responses when it interacts with users. It does this by making connections between an input message and the information it has access to. When Chat GPT provides a response, it takes into account the context of the conversation, so the answer it provides is more likely to make sense.