Let's Talk GPT allows users to chat with ChatGPT directly on WhatsApp and Telegram. This service leverages the power of OpenAI's GPT-3.5 Turbo model to provide intelligent and natural language interactions. With a subscription plan starting at $4.99 per month, users can send up to 1100 messages per month. The platform aims to simplify communication and enhance user interaction by bringing advanced AI capabilities directly into the apps people use daily.