Open AI Chat GPT (Generative Pre-trained Transformer) is a large language model developed by OpenAI. It uses deep learning techniques to analyze large amounts of text data and generate responses to user inputs, making it capable of engaging in conversation with users in a natural and human-like way. Open AI Chat GPT is designed to understand and generate language, and can be used for a variety of applications such as chatbots, language translation, and text completion. The model has been pre-trained on vast amounts of text data from the internet and can continue to learn and improve through ongoing training with new data.