Download GAMS Release 34.3.0 (February 25, 2021)

Please consult the release notes before downloading a system. Here are the detailed platform descriptions and installation notes.
The GAMS distribution includes the documentation in electronic form.


MS Windows

Microsoft Desktop and Server Operating Systems (x86_64 architecture)


GNU/Linux System (x86_64 architecture)

Mac OS X

Macintosh System (x86_64 architecture)

Request a Free Demo License

GAMS will not work without a valid license. Please use the form below to request a demo license.


  • Model size limits with a demo license

    • For linear models (LP, RMIP, and MIP) GAMS will generate and solve models with up to 2000 constraints and 2000 variables
    • For all other model type GAMS will generate and solve models with up to 1000 constraints and 1000 variables
    • Some solvers may enforce tigther limits. Please check the licensing chapter for details

    The GAMS log will indicate that your system runs in demo mode

    GAMS 30.0.0   Copyright (C) 1987-2019 GAMS Development. All rights reserved
    Licensee: GAMS Demo license for Jane Doe                 G191203|0002CO-GEN
              Jean Grey School for Higher Learning, United States      DL000004
    , Jane Doe
              Demo license for demonstration and instructional purposes only

    GAMS will terminate with a licensing error if you hit one of the limits above:

    *** Status: Terminated due to a licensing error *** Inspect listing file for more information
  • MD5-Hash values.

    Use a program like md5sum to verify. This should come preinstalled on most Linux systems.

    On Windows systems, open a powershell and enter Get-FileHash .\windows_x64_64.exe -Algorithm MD5

    On Mac OS systems, you can use md5 in the terminal.

    375625a443edbfb3ae7bbd22b6716300  MS Windows   (windows_x64_64.exe)
    f08d61901dbb12dd6848d93877c27693  Linux        (linux_x64_64_sfx.exe)
    3675e30e50ecdce375248f38cc4da02b  Mac OS X     (GAMS34.3.0.pkg)
    a40fdda8f68233182ec766953489e10e  Mac OS X     (osx_x64_64_sfx.exe)
  • For Mac OS X, also a simple self-extracting archive is available, which you can download here.

    Note, that this archive does not contain GAMS Studio.

  • The SmartScreen Filter on Microsoft Windows might give a warning during the installation. For more information please check our Support Wiki.

  • To deliver GAMS with the best performance we are using the Amazon CloudFront web service, a global network of edge locations for content delivery.

Older GAMS Distributions

Request even older distributions

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