ChatGPT is a state-of-the-art language model developed by OpenAI, known for its ability to understand and generate human-like text based on the input it receives. It is part of the GPT-3.5 which is a highly advanced version of the model, leveraging 175 billion parameters to capture and generate intricate patterns in language. If you're interested in experiencing ChatGPT, you can log in and interact with it at https://chatgptpre.com/