“Generative AI and CEFR Levels: Evaluating the Accuracy of Text Generation With ChatGPT-4o through Textual Features”. Vocabulary Learning and Instruction 14, no. 1 (February 19, 2025): 2078. Accessed November 5, 2026. https://www.castledown.com.au/journals/vli/article/view/vli.v14n1.2078.