GrandpaCADWhat's New at GrandpaCAD
We're always working hard to make 3D modeling easier and more fun. Here's a timeline of our latest major updates and news. Each month's update also includes a number of bugfixes and smaller improvements.
November 2025
Gemini 3
We've integrated the Gemini 3 model. By our evaluations is by far the smartest model for 3D generation out there.
Testing Infrastructure Update
We've updated our testing infrastructure to be able to evaluate our changes in a more data driven way.
GPT-5.1
We've experimented with GPT-5.1 and found it to be a much faster model than GPT-5. But this was short lived and superseded by Gemini 3 just a few days later.
Improvements Across the Board
We have made a lot of smaller improvements that when added together improve the generations drastically.
Visual Autofix Disabled
We've disabled the visual autofix feature for now. It's not ready for prime time yet.
October 2025
Add support for select parameter
You can now select from a list of options in the parameters editor.
Blender Backend Migration Complete
We've moved our core 3D generation from JSCAD to Blender, enabling more robust and complex models, including organic shapes, bevels, and fillets.
Visual Autofix Alpha
While generating a model AI will now continously look at the model and try to correct itself.
September 2025
Beta
We are now in "beta" which means anyone can try it out.
Search is here!
Now the AI will automatically search for datasheets and dimensions of CAD parts when you ask it to generate a 3D model. If it doesn't you can always ask it to "search and generate".
Memory is here!
GrandpaCAD will now remember your requirements even throughout the longer conversations.
Context length has been increased
Previously GrandpaCAD only sent the last message in the generation, now it will send up to 5 previous messages, meaning you can converse much more naturally.
Autofix Alpha
This should result in less models that fail to generate. Now if the model fails to generate it will autmoatically try to fix itself. If this happens the model generation might be twice as long.
Workspace Sharing
You can now get a public link to your workspace. All public within that workspace will be visible to anyone with the link. To demonstrate this we created a public library.
August 2025
Smarter Generations with GPT-5
We've upgraded our core AI to the latest GPT-5 model. This means your 3D models will be generated with better accuracy and more creativity. It's like giving Grandpa a new set of super-powered tools!
Grandpa Used 100 generations
He just hit his 100th generation using what I built for him. Honestly hoping for a thousand more.
Pauline Joins!
Pauline is my fiance and she will help me organize the competitions, help the community and more.
Newsletter and Social Media Launched
Since Pauline has joined she has helped me create a newsletter and social media accounts to help spread the word about GrandpaCAD. Find us on Instagram, TikTok and YouTube with @GrandpaCAD
First Competition is live!
We're excited to announce the first GrandpaCAD Model Battleground competition!
Minor Generation Improvements
We're always tinkering under the hood to make GrandpaCAD better. This month, we've made several small tweaks to improve the quality of your 3D models.
July 2025
Share Your Creations
You can now share a link to your 3D models with friends and family. Let them see what you've been working on!
Chat Revert and Forking
Made a wrong turn in your design? No problem! You can now go back to a previous point in the conversation or even 'fork' it to explore a different design idea without losing your original chat.
June 2025
Improved Tutorial
Our welcome tutorial is now even more helpful, making it easier than ever for new users to get started with GrandpaCAD.
May 2025
Introducing: Grandpa Mode!
For a simpler, more guided experience, we've introduced Grandpa Mode. It features larger text and buttons, with extra tips to help you along the way. This is when grandpa used grandpacad first.
3D Text Generation
You can now create 3D text! Perfect for personalizing your models with names, dates, or messages.
April 2025
GrandpaCAD is Born!
The first version of GrandpaCAD was launched! It all started with a simple idea: making 3D modeling as easy as having a conversation. This initial prototype included the core chat interface and first workflows to making 3D AI Models. Just enough so my grandpa can experiment.