GPTionary is an AI-powered education tool that leverages GPT and open-source language models to help users acquire new vocabulary in a concise and efficient manner. It is an ideal tool for students, teachers, and lifelong learners looking to increase their knowledge base. Access to GPTionary is restricted to community leaders such as school teachers, principals, and officials and requires a key, which can be obtained by providing valid credentials such as a professional email address or official document. GPTionary also features an error message system to prevent misuse and a support system to help users who are having trouble with their key or need further assistance.