ChatGPT is a large language model developed by OpenAI, which is designed to engage in human-like conversations with users. It is built using cutting-edge artificial intelligence techniques, including deep learning, natural language processing, and machine learning. ChatGPT is trained on a vast corpus of text data, including books, articles, and online content, which allows it to generate high-quality responses to various questions and topics. It can understand and interpret natural language inputs, including slang and colloquialisms, and provide appropriate and helpful responses.