The age of AI is finally with us, and brings with it far-reaching implications for language teachers and learners around the world. But how do we utilize the affordances of Large Language Models (LLMs) and other AI-powered technologies for the best English language learning outcomes? While the technology may have changed, the pedagogy in many respects remains the same. Students still need lots of exposure to comprehensible input, and they still need to produce a lot of meaningful output. It’s still a challenge for some students to find the opportunity to use the language productively, and it’s still a challenge for many teachers to give extensive personalized feedback to every individual in large speaking and writing classes. In the context of English language learning in Japan, many students still fall way below the recommended 2500+ hours of engagement with English by the time they graduate from college. Eigo.AI aims to assist and enhance this human-centric English language teaching and learning process. It offers a library of lessons on a wide range of topics, from historical events and figures to important scientific discoveries and much more. It combines OpenAI's cutting-edge LLMs with human proof-reading to provide engaging materials in beginner, intermediate, and advanced levels. Students receive AI-powered feedback on their speaking and writing skills, and all their progress and engagement can be easily tracked and monitored by teachers. Eigo.AI provides students with that all-important extra exposure to English and helps solve some age-old pedagogical problems with the latest advances in AI.