OpenAI ChatGPT is a large-scale language model trained by OpenAI for conversational responses. It is designed to generate human-like responses to natural language input, allowing it to engage in conversations with users in a variety of settings. The model is based on the GPT-3 (Generative Pretrained Transformer 3) architecture, which is a state-of-the-art machine learning model for natural language processing tasks. OpenAI ChatGPT has been trained on a large dataset of human conversation, which allows it to generate responses that are relevant and appropriate to the conversation at hand.
All these answers From OpenAI Chat.