Groqbook is a Streamlit-based application that leverages Llama3 on Groq to rapidly build books from a single prompt. It's designed for non-fiction books and can generate each chapter within seconds. The application mixes Llama3-8b and Llama3-70b models; larger models generate structure, while smaller models create content. Currently, the model uses only chapter title context to generate chapter content. This will expand to the full book context in the future, enabling Groqbook to generate high-quality fiction books.