Jum Anggraeni Kadir. 2026. The Use of Artificial Intelligent (AI) as a Learning Technology to Improve Students’ Vocabulary Mastery at SMAN 5 Palopo (supervised by Andi Mangnguntungi Sudirman and Reski Yusrini Islamiah Yunus).
This research aims to find out (1) whether Artificial Intelligence (AI) is effective or not in improving students’ vocabulary mastery at SMAN 5 Palopo and (2) students’ perceptions of English language learning using Artificial Intelligence (AI) at SMAN 5 Palopo. The population for this study consisted of 217 10th-grade students at SMAN 5 Palopo. By using Single-stage Cluster Random sampling, a sample of 55 students was selected. The study used a Pre Experimental design. Data were analyzed using a Mixed-methods approach with a Convergent Parallel design. Students' mean scores increased from 47.491 on the pretest to 67.527 on the posttest. Futhermore, the result of the T-test shows that sig. (2-tailed) value < α (0.000 < 0.05). Thus, H0 is rejected and H1 is accepted, meaning there is a significant effect of using ChatGPT, as an AI learning technology, in improving students' vocabulary mastery. Therefore, it can be concluded that ChatGPT is effective in improving the vocabulary mastery of most 10th-grade students at SMAN 5 Palopo. Additionally, the interview results from the PU’s aspect indicate that students perceived AI (ChatGPT) can improve their performance and productivity in English language learning. Meanwhile, from the PEOU aspect, students perceived AI (ChatGPT) is easy to learn and operate in English language learning. Therefore, it can be concluded that the 10th-grade students at SMAN 5 Palopo perceive ChatGPT as a useful learning technology that can be effectively used in English language learning.