GPT Hotline is a messaging assistant powered by AI that brings ChatGPT's capabilities to WhatsApp. Its key features and benefits include:

• Convenient access: No need to download apps or save bookmarks; simply connect with ChatGPT through WhatsApp
• Search and sharing: Interact with the AI, search and share previous conversations, and access images, videos, and news
• Speech To Text: Record voice messages (in English) to GPT and receive text-based responses

GPT Hotline's applications cater to different types of users:

• Individuals seeking quick access to AI assistance for information and conversation purposes
• Professionals who want to leverage AI capabilities for research and communication
• WhatsApp users who want to experience advanced chatbot technology within their preferred messaging app

To use GPT Hotline, users need to sign up for the GPT Pro Plan, which offers a 20% discount for the first month and a refund option if unsatisfied.