T5, or Text-to-Text Transfer Transformer, is a natural language processing model developed by Google. It is designed to convert various language tasks into a text-to-text format, allowing it to handle tasks like translation, summarization, and question answering using the same framework. The model is based on the Transformer architecture, which enables it to understand and generate human-like text. T5 was trained on a diverse dataset, making it versatile and effective for a wide range of applications in artificial intelligence and machine learning.