Duolingo has integrated OpenAI's GPT-4 into its platform, allowing for more in-depth language learning. This integration enables users to engage in conversations with the AI and receive feedback on their responses. The move aims to address gaps in traditional language learning methods, such as limited opportunities for practice in real-world scenarios. --- Why it matters: This matters because it brings a new level of conversational interaction to language learning, which can improve retention and understanding of complex linguistic concepts. Source: https://openai.com/index/duolingo