Opus 5.5 designs a buildable life-size LEGO duck: 1,113 parts, zero collisions
fofrAI · x · 2026-09-25
A user asked Opus 5.5 to design a Microduck that can actually be built with real LEGO pieces, and the results are impressive:
- Life-size design using 1,113 real LEGO parts
- Verified: 3,204 connections, 0 collisions, every step buildable, with the center of mass inside the feet
- Generated a 141-page LEGO-style instruction booklet (237 steps)
- Priced every piece in the browser and prepared the orders on BrickLink
The end-to-end pipeline—from structural design and feasibility verification to documentation and procurement—showcases frontier models' spatial reasoning and long-horizon engineering capabilities.
Related event: Opus 5.5 Designs a Microduck from 1113 Real LEGO Pieces(6 posts)→
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