134KB realtime city demo by Opus 5.5 sparks 'how did you do that' reactions
timalphena · x · 2026-09-26
@timalphena, after seeing games built with Opus 5.5, asks how it was done — their own attempts with Opus 5.5 came nowhere close to the 134KB realtime 3D city demo ("grand theft code"). The demo was posted as a follow-up after people asked about the size of the author's previous night's creation, showing the model's ability to generate real-time 3D scenes in a tiny footprint. The author jokes about the cheeky name: much of it is RL code, and humans are just the bootstrap.
Related event: Claude Opus 5.5 Generates 134KB Real-Time 3D City in One Prompt(8 posts)→
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