AI Chat is a writing assistant based on the ChatGPT and GPT-4 APIs. It offers unlimited Q&A capabilities, supports 140+ languages, detailed conversations, and more. No login is required, ensuring user privacy. It supports various functionalities including question answering, creative writing, language learning, discussion on topics, and personalized suggestions. It also features voice input and output. This app is designed to improve writing skills, creativity, language learning, career development, and news reading.