topic Re: GDL - Python and AI in Parametric design

GDL - Python and AI

Hmooslechner — Sat, 21 Mar 2026 06:38:35 GMT

Made some progressions for using AI (Gemini and Grok) to "script for me" some phyton-scripts to read out the data from 2D and 3D-GDL-Scripts and make additional 2D and 3D-scripts to put in the existing GDLs to get some additional 3D and 2D-results. Proof of concept..

Example: i made a terrain with Archicads normal tools - transformd this into GDL, copied the GDL-scripts into normal textfiles and made the python read this and created new GDL-Scripts for it.

Works fine now after some iterations with the AI's. GemeniPro leads over Grok, but not far.

I do not know anything about python so far - its all made through the AI's

Just to know - You need propper installations of python3.12 and some additional python features like thinker and DXF-handling in python. The AI will lead You trough the installationprozesses when confronted with the errors, when phyton is not installd propperly.

German forum Task - let it auto-translate:
https://community.graphisoft.com/t5/Programmierung/2D-Linien-in-3D-Linien-Morphlinien-umwandeln-mit-externem-Python/m-p/696220#M8344

some german Youtubes:

https://www.youtube.com/watch?v=WDCHoDz9Ges

https://www.youtube.com/watch?v=96_LfhtMtns

https://www.youtube.com/watch?v=www3XqTI9Xc

it lets You do things - normally not possible.

Re: GDL - Python and AI

Ricardo Heim — Mon, 23 Mar 2026 13:48:23 GMT

Thank you for the interesting post!

Do you teach the AI to code in GDL or it worked from default already?

Betreff: GDL - Python and AI

Hmooslechner — Tue, 24 Mar 2026 04:55:42 GMT

It works already - but not perfect. In every new "AI - development - iteration" - it works better. Half a year ago - it made just nearly unusable GDL-script code. Four month ago, it deliverd code, which began to work after many discussions and back-infos from Archicad's error-messages. Now, it makes mostly uasable code with very few errors in Archicad in normal situations and has just problems with "very special topics" on the top edge of GDL like simulating morphs in GDL or roof-tiling - "the golden Goose cases" in mathematics in GDL.. Wait some Time and it makes them too, i think..

Re: GDL - Python and AI

Ahmed_K — Tue, 24 Mar 2026 09:04:53 GMT

Graphisoft can " teach AI " by pushing all it's libraries inside AI engines , with some guidance , that's where AI is beneficial for users , this way we can break a huge barrier of learning gdl

Re: GDL - Python and AI

Mathias Jonathan — Tue, 24 Mar 2026 09:29:33 GMT

Tbh, I'm working with claude code and a small script that extract/recompile GDL, a few GDL pdf linked to the project and one or two object examples linked to what I want to achieve. Exactly how I would code by myself. IA can take care of multiple object at the same time (Macro, MVO...) and create new parameters,objects with ease. The debug part is where we can help, pinpointing where the IA should look.

Re: GDL - Python and AI

Ahmed_K — Tue, 24 Mar 2026 09:59:01 GMT

so , if i upload a gdl object ( .gsm file ) to claude, with the pdf " gdl reference guide " or "gdl coockbook", would help me to generate correct scripts ? with MVO contorole and scheduelable parameters ?

last night i was struggling to script my " concrete linter " for a window , and it ends with some illogic behgaviour of the object ,

can you explain more please ?

Re: GDL - Python and AI

Mathias Jonathan — Tue, 24 Mar 2026 11:54:30 GMT

I use a python script (Linked here) that enable claude AI to use the LP_XML converter tool app and I ask Claude AI to analyse some official object to help me with it (Object + macros). You could also give claude AI the page to the correct documentation (GDL center).

Re: GDL - Python and AI

Ahmed_K — Tue, 24 Mar 2026 23:55:33 GMT

Good news for the NON GDL lovers ,

i created almost 8 macros , all of them are like window accessories that aren't incorporated in the default library , like concrete lintels , automatic closing device, cavity for rolling store, shelves ( when i use windows as a closet door ) and other stuff,

i can tell that all of them where created using CLAUD , Gemini , and sometimes Chat GPT , without writing any line of code , i just descripe what it want , i copy code, paste , and see what happens , after some time , all generated code was correct,

next step , i'll see what happens when i call theese macros inside archciad library elements,

and what will happen when ai generates code for interface ,

This is really very promessing , for some quick tasks AI helps a lot , thats what we need , a way to edit and customise library items easily