This Element explores the concepts, benefits, and limitations of the use of AI in language learning, teaching, and assessment. It also looks at AI tools for language teaching and language teachers' roles and competencies required for AI-powered language teaching. In addition, it offers practical ideas for AI-powered language teaching and presents AI-powered language teaching activities based on an AI literacy framework, which highlights using AI creatively, critically, effectively, efficiently, and ethically. The Element examines challenges in AI-powered language teaching and provides teachers with actionable guidelines to overcome the challenges. It guides language teachers and teacher educators on how to develop AI competencies, how to select AI tools, and how to integrate the tools successfully into their teaching practices.