The AI tool, GPT Hotline, allows users to chat with an AI assistant through WhatsApp. Users can chat about anything and also create/edit images, get news updates, and access advanced chatbot features. The tool allows users to easily search and share past conversations and use special commands to create/edit images, videos, and stay up-to-date with the latest news. Users can also set reminders and easily forward messages to friends. The tool requires a sign-up and subscription for access to its features.