AntConc 4.3.1 is a widely adopted freeware corpus analysis tool in corpus linguistics, recognized for its intuitive user interface and extensive analytical capabilities, such as concordance generation, keyword listing, and collocation analysis. This study explores the key enhancements introduced in AntConc 4.3.1 - namely, performance optimizations, enriched visualization features, and integration with generative AI - while also addressing the tool's limitations, including the absence of Korean morphological analysis and challenges in managing large-scale corpora. The discussion underscores AntConc's utility in both linguistic research and educational settings, reaffirming its continued prominence as a corpus-based research and teaching resource and suggesting directions for future development.