GPT Hotline is an AI tool that allows users to connect with an advanced chatbot on WhatsApp. Users can have conversations about anything, create and edit images, get news updates, and more. The tool offers features like preserving chat message history, easily sharing conversations with friends, and using power commands to reset conversations, get images and videos, and stay updated on the latest news. Users can also send voice messages to the AI using the Speech To Text functionality and set reminders for themselves. GPT Hotline provides the power of GPT-3 in a familiar messaging platform, making it easy to interact with the AI and access its capabilities. Users can sign up for the GPT Pro Plan and receive a discount using a provided code.