Open Access (OA) publishing is relatively new, having just emerged within the last few decades. OA is different from traditional scholarly publishing models as the content is free for readers to access. There are many benefits to Open Access publishing by providing immediate and free access to academic scholarship. For example, free unrestricted access means all can benefit from the research, compared to just those who work at an institution that pays for access or who can afford it themselves. In addition, the increase in visibility can increase the citations and impact of the work.
Source: Cornell University, Carnegie Mellon University, Pratt Institute