ChatGPT is an AI model developed by OpenAI that can carry on natural conversations. It was trained on a vast amount of internet text which allows it to respond coherently and understand context. ChatGPT has many applications from customer service to content creation and has demonstrated potential for companionship. However, its use also raises ethical concerns around transparency and potential misinformation. Continued research is exploring how to address biases and refine ChatGPT's responses while finding the right balance with human judgment.