Try the Tecplot 360 MB Beta Get a Free Trial Update your Software

Tecplot 360 2025 R1

Release Date: June 26th, 2025

Features and Updates

  • Open Layout with Data Override – Added the ability to override data source instructions for a layout file. This allows applying a given layout to different data. For more information see Layout File Opening.
    Open Layout with Data Override
    Override Layout Data Dialog

    • Added support for overriding data files for layouts containing Tecplot Subzone Loader data via the command line:
      tec360 mylayout.lay myfile.szplt
  • Apple Silicon Native Builds
    • Tecplot 360 is now built and tested on Apple Silicon (i.e., M-series chips). As such, Apple Intel-based versions of Tecplot products will no longer be produced.
    • Mac users will no longer be required to use python3-intel64 when running PyTecplot scripts.
    • Future versions of Tecplot 360 will see improved rendering performance on Apple Silicon machines.
    • HDF Loader is no longer supported on macOS because HDF4 is not supported on the macOS ARM architecture.
  • Reprise License Manager has been updated to RLM 16.1. While not required, we recommend you that you update your Reprise License Manager servers to version 16.1 available for download at my.tecplot.com/portal/product-releases/rlm.
  • Added the ability to read FEMixed zones to the new TecIO API.
  • The Green Gauss derivative method may now be selected in the Data Alter Specify Equations dialog. Previously this was only available via the macro language.
    Specify Equations Dialog

  • Ansys Fluent Common Fluids Format (*.h5) Loader
    • Updated Ansys Fluent Common Fluids Format (.cas.h5/.dat.h5) to support Ansys Fluent 2025 R1 files.
    • Improved performance of Fluent Common Fluids loader when loading datasets with many cas.h5/dat.h5 pairs. In one test case with 175 cas.h5/dat.h5 pairs, load time performance improved from 2:29 to 1:21, a speed up of 45%.
    • Fixed unresponsive behavior when using transient Fluent CFF data when load-on-demand is set to minimize memory use.
  • VTK Data Loader
    • VTS (Structured Grid) and VTR (Rectilinear Grid) files are now supported.
    • Fixed error when loading VTK data files containing variables of type VTK_ID_TYPE.
    • Support for VTK cell and point variables with duplicate names was added. Previously, only one variable would be loaded, and its values were not correct.
  • Abaqus loader now imports Solution Dependent Variables if present in the data file. You may avoid loading Solution Dependent Variables via the Abaqus loader macro command only.
    Abaqus loader macro command only
  • Variable calculations involving gradients, such as Q Criterion—​available in the Calculate dialog, are now processed faster due to multi-threading the calculation of boundary conditions and node connections. These variable calculations are 12% faster with a Plot3D dataset consisting of 5863 zones and 281 million total points.
  • CGNS Loader can now load multiple files that have differing numbers of zones per file (provided each defines the same number of variables).
  • Improved performance and reduced RAM usage for SZPLT files containing Higher Order Elements. In such cases, Tecplot 360 2025 R1 is 22% faster and uses 23% less RAM than Tecplot 360 2024 R1.

Bug Fixes and Improvements 

  • Corrected certain plots, including primary-value contours, made with partitioned, FEMixed zones.
  • Resolved a crash when loading CONVERGE data containing invalid cell connectivity.
  • Corrected loading boundary face results of partitioned OpenFOAM data.
  • Corrected precision loss for solution time values when loading CONVERGE HDF5 files. Previously, values were limited to 6 digits. Zone names will also contain full precision of solution time values.
  • Fixed use of -convert flag when working with data containing FEMixed zones.
  • Updated SZL Server to work with partitioned, FEMixed zones, including high-order-element zones.
  • Changed codec used for AVI export to improve compatibility with default players across Windows 10 and Windows 11. AVI export options can be customized in the tecplot.cfg file. See $!ExportSetup AVIFormatOptions in the Scripting Guide for more information.
  • The Plot sidebar, Time Animation Details, and Zone/Var Info under Data Set Information dialogs will display full precision of solution time values. Previously, values were limited to 6 digits.
  • Fixed issue with automatically assigning strand IDs to zones. Incorrect strand ID assignments could occur with transient data with older loaders that didn’t assign Strand IDs where the zones were delivered in non-increasing solution times.
  • Fixed issue of Zone and Mapping Style dialog freezing when dismissing context menus while editing certain values, such as Group Number, Map Name, X-Axis Variable, etc.

Platform Support 

2025 R1 is now compiled and tested on Apple Silicon (i.e., M-series chips) and is no longer compatible with Apple Intel-based machines.

The 2025 R1 release no longer supports the following platforms (See the Platform Support section of the Installation Guide for the full list of supported platforms)

  • Linux:
    • RedHat 7
    • CentOS 7
  • macOS:
    • Intel-based macOS machines
  • Windows:
    • Windows 10 support ends October 14th, 2025. Tecplot software released after this date will not be supported on Windows 10.

Get a Free Trial     Update Your Software