This study aims to examine the formal integration of scientific research within teacher preparation programs at universities in Kazakhstan, aiming to enhance the research capacity of pre-service teachers. It introduces a research-based learning (RBL) model for delivering research components in postgraduate programs, tailored to address individual research interests through defined modules and directed research projects. The study's objective is to examine the effectiveness of implementing the RBL model in building pre-service teachers' research capacity. Using a quasiexperimental pretest-posttest design, the study employs a questionnaire survey to evaluate participants' self-perceived research skills and knowledge before and after the intervention, assessing the development of their research capability dimensions. Expert assessment is utilized to examine research performance and writing skills among pre-service teachers. The study involved students from language teacher education departments, specifically 120 postgraduate (master's level) students from K. Zhubanov Aktobe Regional University and Baishev University in Aktobe, Kazakhstan. The research findings highlight the effectiveness of the RBL model in training preservice teachers across various stages of the research process. This includes formulating research questions, reviewing literature, planning research activities, clarifying methodologies, conducting investigations, analyzing data, and presenting results. The study shows that the RBL model enhances students' understanding of research, their ability to plan and design research projects, knowledge of research methodology, data analysis skills, research writing abilities, and capabilities in publishing and presenting research. These findings offer valuable insights for university instructors and suggest avenues for further investigation. The study also examines potential implications for how teacher education research is conducted and how programs are designed.