One-Shot Brutalist City Builder: Fable 5.1 Shows a Year of Rapid Capability Gains
Afinetheorem · x · 2026-10-04
- Ethan Mollick compared model progress with the same prompt ("create the ultimate brutalist city builder with delightful, intuitive building controls").
- Fable 5.1 produced a quite good playable result in a single shot, a clear step up from GPT-5 just over a year earlier — the kind of visually obvious benchmark that shows how quickly capabilities improve.
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