Abstrak
The problem in this study inspired by the use of ChatGPT as a tool to assist in writing expository texts which create various perceptions regarding the use of ChatGPT in writing expository texts. For this reason, this study aims to find out perceptions on the use of ChatGPT in writing of expository text by the third semester English students at UIN Mahmud Yunus Batusangkar registered2024/2025 academic year. This research is qualitative approach using phenomenology design. The informants of this research are students majoring in English Teaching Department at UIN Mahmud Yunus Batusangkar who had completed their writing of expository text in 2024/2025 academic year, totalling 7 informants used purposive sampling technique. In this study, the researcher was the key instrument and interview guide as a supporting instrument. To test the trustworthiness of the data, researcher use time triangulation, researcher used Sugiyono‟s theory (2013) namely, data reduction, data display, and conclusion drawing and data verification.