This research paper investigates the transformative role of Artificial Intelligence (AI) in enhancing the academic writing proficiency of future English language teachers. As academic writing demands rigorous adherence to linguistic norms, logical structuring, and critical engagement with scientific discourse, traditional pedagogical methods often struggle to provide immediate, personalized feedback. This study explores the utility of the Grammarly program as an autonomous learning assistant. The findings demonstrate that integrating AI tools into the curriculum not only rectifies surface-level grammatical errors but also fosters meta-cognitive awareness, enabling students to identify their own recurring mistakes and improve their writing fluency, stylistic accuracy, and adherence to formal academic standards. Furthermore, this study proposes a comprehensive framework for integrating such tools to bridge the gap between novice and professional academic writers.