3D, VR & spatial ·
Fable built a full 3D SimCity in one hour and three minutes
A developer gave Claude Fable 5 and Opus 5 the same starter repo and the same assets, then asked each to build a browser SimCity-style game with traffic, zoning, power, money, and day-night cycles. Fable built the entire 3D city in a single run, in one hour and three minutes.
Fable used real 3D buildings, roads, and trees, arranged into zoned neighborhoods, a downtown, and a waterfront. Across both benchmark tasks it cost only about 11 dollars more than Opus while delivering a dramatically better result.
Made by u/shricodev. This write-up follows the original post; it is not an independent product test.
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