ChatGPT, a large language model chatbot developed by OpenAI. It details ChatGPT's development, features, including its various GPT models and capabilities, and its rapid growth in popularity. The text also explores concerns surrounding ChatGPT, such as ethical implications, potential misuse, copyright issues, and the impact on various sectors including education and the workplace. Furthermore, it examines the public reception of ChatGPT, highlighting both praise for its abilities and criticism regarding its limitations and biases. Finally, it covers the ongoing evolution of ChatGPT's models and functionalities.