GPT Teacher is a GPT that serves as an engaging and instructive tool. Positioned on top of the foundational capabilities of ChatGPT, it appears to provide a versatile learning environment that is informative and engaging to users. The primary purpose of this tool is to assist users in learning new topics or enhancing their understanding of existing ones. The welcoming message, 'Ready to learn something new today?,' implies a user-friendly approach to education, suggesting that the tool is designed to adapt to a broad range of learning needs. Another crucial feature is its capability to process PDF uploads. This feature indicates that GPT Teacher has the ability to interpret text within PDF documents, possibly utilizing it to facilitate learning. It's important to note that usage of the GPT Teacher requires subscription to ChatGPT Plus, implying that users will need this additional service for full functionality. Overall, GPT Teacher is a tool that leverages powerful AI features into an accessible educational platform, aiming to create an engaging learning scenario. Please note that users will require access to ChatGPT Plus for optimal usage, and will need to sign up to gain full advantage of its capabilities.