Will Artificial Intelligence (AI) replace English teachers in South Korea? This research investigates using AI for English education in Korean primary schools, including its advantages, disadvantages, and recommendations. The study employs qualitative methodology and semi-structured interviews (SSI). The participants are all qualified teachers and have experience teaching English with the government-funded programme AI Pengtalk. The transcribed data are analysed using a thematic coding approach. The findings reveal that the significant successes of AI in English education are (1) the effectiveness of classroom management, (2) the adoption of new technology, and (3) the positive cognitive approach (individualisation, equality, motivation, and autonomy). On the other hand, the results also stress the limitations, (1) ethical issues with AI, (2) lack of flexibility, and (3) weakness of speech recognition. It can be concluded that AI is a valuable resource for assisting English teaching and learning, but it is still in its start-up stage.