# SKY-001 designs physical products by planning parts and build steps

> Original title: World models are moving past generating scenes to look at, to generate things you can build.

- Source: Rohan Paul
- Published: 2026-11-02T18:30:37.000Z
- Bad Influence: https://badinfluence.news/items/c2133nes9435iwrda5blzddzr
- Original: https://x.com/rohanpaul_ai/status/2117323512155394394

## Summary

Skyfall AI releases SKY-001, a model that designs physical products by planning parts and build steps in 3D. The post says it matched GPT-6 Astra's CAD accuracy at about 150x lower cost per design. SKY-001 outputs a part tree, a sketch for each operation, and each intermediate solid, using a Hierarchical Composer and a Construction World Model.

## Post

World models are moving past generating scenes to look at, to generate things you can build.

@skyfallai released SKY-001, a model that designs physical products by planning parts and build steps in 3D, and it matched GPT-6 Astra’s CAD accuracy at about 150x lower cost per design.

SKY-001 outputs a design along with the ordered sequence that builds it: a part tree, the sketch for every operation, and each intermediate solid.

Two stages do the work. 
- a Hierarchical Composer generates the whole object and unfolds it into assemblies and parts. 
- a Construction World Model then predicts the visual steps that build each leaf, with its parent as context.

[Video](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Famplify_video_thumb%2F2117322504981381120%2Fimg%2FT5gG7OC613Ru-SDV.jpg&mode=thumb&exp=1793836800&sig=e87dc12b112ebd06)

[Video](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Famplify_video_thumb%2F2117322505811845120%2Fimg%2Fyc3x9xzYGHAffE4R.jpg&mode=thumb&exp=1793836800&sig=36f958ab6a2e4c2a)

![](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FHWI9v19aMAAiuJX.jpg&mode=thumb&exp=1793836800&sig=a7098452d4a44eee)

## Quoted post @spisallyouneed

> Very proud to showcase our latest demo of how our Engineering World Model SKY-001 can design a complex Jaguar car with 1000s of complex parts.
> 
> In order to get us to Autonomous Manufacturing, we need to design systems that can think like a ‘AI General Engineer’: planning complex physical structures, long term sequences, and feasibility directly in the physical domain rather than approximating it through next-token prediction.
> 
> Engineering design operates in the spatial reasoning domain through hierarchical decomposition, constraint satisfaction, and the sequential construction of complex physical objects.
> 
> World models are going to be the next frontier in AI after LLMs and SKY-001 is just the beginning.

https://x.com/spisallyouneed/status/2117317080106274873