Chat With RTX is a tool provided by NVIDIA. It is essentially a demo app designed to allow users to personalize a Generative Pretrained Transformer (GPT) large language model chatbot. Essentially, a user can configure this chatbot to connect to their own content, which can range from documents, notes, and videos, to other forms of data. Therefore, it offers a customizable AI solution for those who need a chatbot that can process and interact based on a wide range of content. The tool exploits the power of the NVIDIA RTX technology, hence the name 'Chat With RTX'. As a custom AI model, it allows for versatile applications across various domains, especially where personalised interaction with user-specific data is required.