<![CDATA[The integration of Artificial Intelligence (AI) in education has created new opportunities to support students’ English writing development. ChatGPT, as an AI-powered language model, has gained significant attention due to its ability to provide instant feedback, generate ideas, and assist learners in improving grammar and vocabulary. However, many vocational high school students still face difficulties in writing, including limited vocabulary, grammatical inaccuracies, low confidence, and challenges in organizing ideas. This study aims to investigate the effectiveness of ChatGPT on the writing ability of eleventh-grade students at SMK N 4 Payakumbuh. This research employs a quantitative descriptive approach involving 83 students selected through total sampling. Data are collected using a questionnaire based on indicators of instant feedback, personalized learning, and support in overcoming writing difficulties. Preliminary findings from classroom observations, interviews with an English teacher, and interviews with eleven students revealed that ChatGPT helped students generate ideas, improve grammar and vocabulary, and organize their writing more effectively. The teacher also reported that ChatGPT facilitated the preparation of teaching materials and supported writing instruction, particularly in descriptive text. These findings indicate that ChatGPT has the potential to positively contribute to students’ writing development when used appropriately under teacher supervision. The study is expected to provide insights into the effective integration of AI-based tools in English language teaching and learning.]]>
