Imagine learning a new language, not through rote memorization or rigid textbooks, but through engaging conversations with a personalized AI tutor. This is the promise of BIPED, a groundbreaking new system designed to transform ESL education. Learning a second language can be challenging. Traditional methods often fall short, failing to capture the nuances of real-world conversation and neglecting the diverse learning styles of individual students. BIPED tackles this challenge head-on. Researchers have developed a unique approach: creating an AI tutoring system informed by real human tutoring sessions. They recorded numerous one-on-one interactions between experienced ESL tutors and students. These recordings weren't just transcribed—they were meticulously analyzed. Researchers identified key conversational patterns and teaching strategies, creating a detailed taxonomy of 'dialogue acts.' These acts, ranging from simple explanations to complex cultural insights, form the heart of BIPED's pedagogical approach. The team then trained two AI models, one using GPT-4 and the other using the open-source SOLAR-KO model. The goal was to see how well these models could replicate the effective teaching strategies observed in the human tutoring sessions. The results were impressive. Both models demonstrated a remarkable ability to mimic human tutors, generating contextually appropriate responses and employing a variety of pedagogical techniques. They offered definitions, explained word origins, provided cultural context, and even engaged in code-switching to enhance understanding. Notably, the fine-tuned SOLAR-KO model excelled in generating concise, engaging responses, even outperforming GPT-4 in some areas. It also showed a greater capacity for encouraging student participation. While the models showed significant promise, the researchers acknowledge the need for further refinement. Interactive evaluations with real students are crucial for assessing the true effectiveness of the system. The risk of AI 'hallucinations'—generating incorrect information—also needs to be addressed. The future of language learning is conversational, and BIPED represents a significant leap forward. By bridging the gap between AI and human interaction, it offers a personalized, engaging, and effective path towards English fluency.