BIM (Building Information Modeling) has revolutionized the construction industry by enabling stakeholders to create, collaborate, and manage building designs and data in a more efficient and integrated manner. A crucial aspect of BIM is the model file format, which determines how data is structured and stored within a BIM project. The two most commonly used BIM model file formats are Revit (.rvt) and AutoCAD (.dwg). Revit is known for its parametric modeling capabilities, while AutoCAD is widely used for 2D drafting and 3D modeling. These file formats play a pivotal role in enabling interoperability and data exchange between different software applications used in the construction process. Understanding BIM model file formats is essential for ensuring seamless collaboration and data exchange throughout the lifecycle of a construction project. It allows stakeholders to access and manipulate critical building information across various software platforms, leading to more efficient workflows and better-informed decision-making. As the adoption of BIM continues to grow, so does the importance of standardized file formats that facilitate the seamless exchange of data between different project stakeholders. Industry initiatives such as the Industry Foundation Classes (IFC) and COBie (Construction-Operations Building information exchange) aim to promote open BIM standards and interoperability by defining common file formats for sharing building information. In conclusion, BIM model file formats are a fundamental aspect of the BIM process and are crucial for enabling collaboration, interoperability, and data exchange in the construction industry. By understanding the intricacies of these file formats and embracing industry standards, stakeholders can truly harness the power of BIM to drive efficiency and innovation in building design and construction projects.