Rachakum, Yaowapa, Thummarat Boonrod, Siri-orn Vongtavee, Bancha Luaphol, Montakarn Tummawat, Kamonwan Rachatawetchakul, and Suksun Promboonruang. 2026. “Comparison of LLMs for AI Chatbots in Local Government Public Services”. Journal of Applied Informatics and Technology, August. Mahasarakham, Thailand, 267290. https://ph01.tci-thaijo.org/index.php/jait/article/view/267290.