Classifying Open Access business models

The proliferation of Open Access (OA) business models has been rapid, presenting challenges for stakeholders in academic publishing in communicating and working effectively with one another. This article offers a comprehensive classification system for OA models, categorizing them into five core types (transactional, bundled, cooperative, sponsored, and alternative), each with distinct characteristics and implications for funding, equity, and implementation. This classification aims to clarify the myriad labels and terminologies used, addressing the inconsistencies and gaps in previous attempts to categorize OA models. By providing descriptions and analyses of different business models, the article seeks to enhance transparency around and understanding of OA options, ultimately supporting informed decision-making in the evolving landscape of academic publishing.