For years, "Open BIM" felt like a marketing phrase. Not anymore. The new IFC 4.0 export is stellar. When you open a Revit file converted to IFC, Archicad 27 actually understands aggregates (like stairs and curtain walls) as single objects rather than a pile of stray plates and risers. The "Reference Model" function lets you snap to engineer’s IFC geometry without importing it into your project file. Your model stays clean; your coordination gets accurate.
The Curtain Wall tool finally behaves like an intelligent system. You can now drag to create curved walls, add corner pillars without exploding the system, and—hallelujah—the skylights have native, parametric controls. No more using a roof window tool that doesn’t cut the opening correctly. archicad 27
While Revit has Dynami and Vectorworks has Marionette, Archicad still relies on third-party add-ons (like Rhino.Inside or Grasshopper-Archicad Connection) for parametric scripting. For a software this advanced, the lack of a native visual scripting language in 2024/2025 feels like a missing tooth. For years, "Open BIM" felt like a marketing phrase