ChatGPT Free Version GPT-4 (Direct Domestic Connection) is a chatbot developed based on OpenAI's ChatGPT3.5 and 4.0 models. It features a rich template of questions, making it convenient, quick, and accurate for question answering. Users don't need to purchase in bulk upfront; they can register for a free 30-day trial and purchase day, week, or month passes based on their needs.