Dyadic is a novel, web-based platform designed to facilitate research on human-human and human-AI conversations, addressing longstanding limitations in the field by providing a modular and adaptive tool for investigators. This platform enables researchers to study conversational dynamics with greater ease and flexibility, allowing for more nuanced understandings of social interactions. By leveraging Dyadic, scientists can craft customized experiments and collect data on human communication patterns, including those involving artificial intelligence. The platform's scalability and web-based architecture make it an attractive solution for researchers seeking to overcome traditional constraints in conversation research1. As conversation analysis continues to inform various disciplines, from social psychology to natural language processing, Dyadic's capabilities are poised to yield significant insights into the complexities of human interaction. This matters to practitioners because it can help them develop more sophisticated AI systems that effectively engage with humans, ultimately enhancing the overall quality of human-AI interactions.