Important Announcements About This Release

STK 13.0 Announcements

  • "AGI SEDS/Geospatial Content Server" has been replaced with the "Ansys Geospatial Data Cloud," a self-hosted Cesium ion instance maintained by AGI. Custom SEDS and Geospatial Content Servers are deprecated but still supported in the STK application.
  • For STK application version 13, OpenGL 4.5 is required to render fully the STK application. For systems that do not meet the hardware requirements for OpenGL 4.5, the STK application offers a software rendering option that you can enable in the Edit menu under Preferences > General > Graphics.
  • Support for COLLADA 3D model format has been removed from the STK application. COLLADA is an old format that is not properly supported by current 3D modeling tools, and the specification is no longer being maintained. The STK application supports the widely adopted glTF format for 3D models. You should convert 3D models to glTF format for compatibility.
  • MATLAB connectors were updated to v1.0.24 for MATLAB 2025a. For more information, see our MATLAB page.
  • The HTML Viewer has been removed. Use the STK application's Web Browser when using HTML tools and sites. A new Connect command called OpenWebBrowser is available to open the new Integrated Web Browser. You can learn more about this command in the Connect help.
  • For STK application version 13, the Excel Add-in has been removed.
  • The STK application provides access to the Terrain Integrated Rough Earth Model (TIREM) version 3.31. The plan for STK application version 13.1 is to remove TIREM 3.31, retain version 5.5, and add version 6.3. Once this occurs, running version 5.5 scenarios in the new STK application version will have no effect, but running version 3.31 scenarios will invoke TIREM 6.3 rather than TIREM 3.31, which would likely cause changes in your scenario results.
  • The Jupyter Notebooks UI plugin has been removed from the STK application, so you can no longer access Jupyter Notebooks from inside the application. You can still use Jupyter Notebooks outside of the STK application in the web browser.
  • The Java minimum version has been updated to Java 11 for the Parallel Computing Server Java API.

  • Support for the MrSID (*.sid) image format is deprecated and will be removed in a future release. If you are using MrSID images, you should convert them to JPEG 2000.