Core Insights - Open Access (OA) has become a significant model in scientific publishing, with Springer Nature being a leading institution in this field, offering a comprehensive OA publishing portfolio [1][3]. Group 1: OA Publishing Overview - Springer Nature has approximately 700 pure OA journals, which provide authors with greater benefits, including higher citation rates compared to industry peers. In 2023, the average citation per pure OA article was 6.3 [3]. - The average impact factor (IF) of Springer Nature's pure OA journals is high, with over 500 journals having an IF, and 62% of these journals showing growth in their IF [3]. - 309 pure OA journals are ranked in Q1 across various disciplines, representing 57% of the total, while 450 journals are in the top 50 of their fields, accounting for 83% [3]. Group 2: Springer OA Journal Brands - Springer, established in 1842, is a renowned publisher in various scientific fields, offering over 2000 mixed and OA journals [5]. - BMC, a pioneer in OA publishing, has around 300 peer-reviewed OA journals focused on advancing biological and health sciences [11]. - Discover, another OA brand from Springer Nature, aims to support researchers in publishing their findings quickly and openly, with a target publication time of 7-10 weeks [16]. Group 3: Notable Journals and Their Metrics - Nature Communications, a highly selective multidisciplinary OA journal, has an impact factor of 15.7 and a total citation count of 911,428 in 2024, making it the second most cited journal globally [34][37]. - Scientific Reports, a multidisciplinary OA journal, has an impact factor of 3.9 and a total citation count of 834,622 in 2024, ranking third in global citations [38][42]. - Humanities and Social Sciences Communications, an OA journal for humanities and social sciences, has an impact factor of 3.6 and a total download count of 10,654,567 in 2024 [42].