Summary Test Master is a Generative Pretrained Transformer (GPT), designed to assist users in practicing and understanding English language concepts. It focuses specifically on assisting users in locating topic sentences within a text, improving their comprehension abilities and supporting them in understanding how topic sentences influence the overall theme and structure of a piece of writing. The GPT uses its underlying ChatGPT layer to create an interactive and adaptive learning experience for users. In essence, it is like practicing English with a well-versed partner, ready to guide users through various linguistic obstacles. The tool offers prompt starters to facilitate users as they interact with the platform, covering areas such as vocabulary enhancement, grammatical correction, practicing conversation, and the correct usage of idioms.Not limited to learners, educators can also use the Summary Test Master GPT to create unique and challenging exercises for their students. It can serve as a valuable tool in classroom settings or for independent study, making English language learning and written comprehension more engaging.While it primarily aims at exploring English language issues, the Summary Test Master has potential utility in other areas: it could be of use to anyone seeking to improve their understanding of textual content in general, whether for study or work purposes. The GPT breathes life into the learning process with its interactive, user-oriented design, moving away from traditional methods and towards an accessible and engaging learning experience. Note that this GPT requires ChatGPT Plus subscription, indicating that it lies on the more advanced end of the spectrum in terms of AI tools.