Abstract. The article discusses the influence of the "inverted class" model, enhanced by artificial intelligence tools in teaching English as a foreign language, on mastering the lexical stock. The focus on three-stage learning, which is based on independent repetition using artificial intelligence after lessons, recognizing new vocabulary before class, actively using it in the classroom in a semantic context, rather than the model of memorizing words a traditional lesson. The methodological basis of the study was a comparative analysis of the works of Kazakhstani and Russian researchers published in 2023-2025, systematization of the didactic activities of digital tools and pedagogical design of Model tasks for the EFL lesson.The result of the analysis showed that artificial intelligence is more productive as a means of connecting pre-training, level adjusting training, instant feedback and interval repetition than as a separate technology that automatically "trains" vocabulary.In the practical part, samples of identifying new words from the text,creating context, conducting a microdiologue with AI-chat,comparing incorrect answers, forming an individual dictionary map snd deferred verification were presented.