This comprehensive study of the literature investigated the use, advantages, and drawbacks of the Chat GPT in English language instruction. This article was constructed by using a limited search strategy for relevant databases like Google Scholar, Frontiersin, ResearchGate, Journal of Applied Learning and Teaching, and ScienceDirect using the keywords “Chat GPT” and “ELT Assessment.” The search is limited to articles published between 2019 and 2024, written in English, and containing “Chat GPT” and “English Language Assessment,” open-access, peer-reviewed, and relevant conference papers. This review examined 20 academic research papers on the use of the Chat GPT in English Language Teaching (ELT) assessment. The findings highlighted various benefits, including simplified assessment, customisation, near-real-time automation, removal of geographical restrictions, and cost-effectiveness. Nevertheless, ethical issues and restrictions were discussed, such as the responsible use of AI as a tool and the imbalance that AI can create in the integrity of an the assessment. The outcomes of this review could offer an understanding of the Chat GPT in terms of ELT assessment application and some new opportunities for future research and practice. The novelty of this study lies in the thorough literature review conducted by the author, encompassing a diverse array of research studies. The study elucidated various advantages and obstacles encountered by researchers during the assessment process. Furthermore, the researchers underscored the necessity of human validation for current generational artificial intelligence models in practical applications.