ChatGPT is an advanced artificial intelligence chatbot developed by OpenAI. It uses natural language processing to understand and generate human-like text responses to user queries. Built on the GPT (Generative Pre-trained Transformer) architecture, ChatGPT can answer questions, assist with writing, summarize information, and engage in conversation on a wide range of topics. Its capabilities make it a valuable tool for customer support, education, creative writing, and more. While highly sophisticated, ChatGPT may occasionally produce incorrect or nonsensical answers, so human oversight is recommended for critical applications.