Goalposts

Hacker News has set AI a lot of challenges over the years. Which ones has it met?

2025 Septembercowlby

About a new generative model for structured CAD and LLMs' 3D modeling ability.

Related: All LLMs have struggled helping me generate OpenSCAD models for 3D printing. They can’t seem to reason through XYZ space and 3D math. It’s my current litmus test for LLM performance.

I have had moderate success describing things as geometric primitives. I.e. making a simple phone stand is hard to one shot. Had to do it in steps as make a plane with XYZ dimensions, rotate it X degrees up, calculate the height using trig, create another plane with that height, translate to X position. Etc.

An LLM generates working OpenSCAD models for 3D printing, reasoning correctly through XYZ space and 3D math.

Has this happened?

Yes 67 (51%)Not sure 49 (37%)No 16 (12%)

Votes cast 1–2 October 2026: 100,590 votes from 9,694 people.