[As of June, 2020]

Gekko 3.0 was released as a stable version in the spring of 2019, and new users are advised to use versions in the 3.1.x series, which can be thought of as a “stable” development series (cf. the versions overview page). A stable version 2.4 exists, but in general, the work on the 2.x series is discontinued. Development-wise, at the moment the focus is on stabilization of the 3.1.x version, including help systems etc. If some syntax or other choices turn out to be unfortunate, this will be dealt with in a future “risky” 3.3.x development series that is not even at the drawing board yet (and may not be until 2021).

Aims regarding the further development of the 3.1.x series:


  • Stabilizing 3.1.x, continuing to fix bugs and glitches. Better error messages in Gekko 3.1.x.
  • Improved user manual, with more guided tours etc. Perhaps a guide like “The sun is always shining in Gekko”, adapted from the similar guide for Gekko 2.4 (in Danish).
  • Improved solver capabilities. Blocks of equations, equation objects, model objects. More means than goals. Improved tracking when simulations fail. (Handling blocks of equations has been implemented in the 2.5.x series, but regarding the 3.1.x version, this will be built differently, using equation objects etc. Still, the experiences from model blocks in 2.5.x will be useful).
  • Static simulation possibilities (in a sense removing lags and solving the model for one period to obtain long-run values).
  • Improving daily and weekly frequencies. Quite a bit of work on this has already been done in 3.1.x.
  • Improved DECOMP, work is underway.
  • More advanced PLOT windows, work is underway.
  • Better translator from Gekko 2.0/2.2/2.4 to 3.0 and 3.1.x.
  • Databank API? It would be nice to be able to separate the databank read/write part of Gekko into a clean API that can be called from .NET languages like C#, but maybe also from languages like Python, R or other. Regarding Excel, see below.
  • Improved Excel integration (the so-called ‘Gekcel’ project). A proof of concept is already up and running. The idea is to use an Excel add-in (.xll) that enables Excel to call Gekko (and Gekko databanks) easily. In essence, this works like an Excel API for Gekko.
  • Better Python and R interfaces. Dataframe objects in Gekko would facilitate communication with Python and R.
  • Implementing some of the “missing” functions/procedures from AREMOS that deal with holes in data, interpolation, extrapolation, or conversion between frequencies.
  • More advanced seasonal correction (JDemetra+ etc.).
  • Improved and up-to-date source code documentation + method API for the Gekko C# source code. There is a rather large project underway regarding this, starting in the fall of 2020.
  • 64-bit version of Gekko. GAMS has gone 64-bit only now, and perhaps it would be timely to do the same regarding Gekko. Perhaps the migration from 32- to 64 bit ought to be done at the same time as Gekko migrates to .NET Core. Also, it would be nice to improve digital signing of gekko.exe to avoid warnings from Windows etc.