Building Information Modeling, or BIM, has revolutionized the way construction projects are designed, managed, and executed. A key aspect of BIM is the use of digital 3D models that contain crucial information about a building's design, construction, and operation. These models are created using specialized software and are saved in various file formats. Understanding BIM model file formats is essential for professionals in the architecture, engineering, and construction (AEC) industry. The most commonly used BIM model file formats include Revit (RVT), Industry Foundation Classes (IFC), and Construction Operations Building Information Exchange (COBie). Each of these formats serves specific purposes and has its own unique characteristics. Revit (RVT) is one of the most popular BIM model file formats and is widely used by architects, engineers, and construction professionals. It is the native file format for Autodesk Revit software and contains detailed information about a building's components, materials, and systems. Revit files can be shared and collaborated on by different stakeholders in a construction project. Industry Foundation Classes (IFC) is an open file format standard for BIM data exchange. It is widely used for interoperability between different BIM software applications. IFC files contain rich data about a building's geometry, properties, and relationships, allowing for seamless collaboration and coordination among project teams. Construction Operations Building Information Exchange (COBie) is a non-proprietary data format that is used for storing and sharing building information. COBie files contain important facility management and equipment data that can be used for maintenance and operations after a building is completed. Understanding the differences between these BIM model file formats is crucial for AEC professionals who work on collaborative projects with multiple stakeholders. It allows for seamless data exchange, coordination, and communication throughout the entire construction lifecycle. With the increasing adoption of BIM in the AEC industry, the importance of BIM model file formats cannot be overstated. By leveraging the right file format for a specific use case, AEC professionals can ensure efficient collaboration, accurate data exchange, and successful project delivery. As technology continues to evolve, new BIM model file formats and standards will emerge, further enhancing the capabilities of BIM in the construction industry.