According to Ethan Mollick, Fable built a Piranesi-style city builder with arches and waterways in vast ruins; play it at capriccio-city.netlify.app.

According to emollick, Fable built an impressionist city builder where gesture painting grows evolving neighborhoods. Play it at cezanne-city.netlify.app.

According to @godofprompt, a one-shot prompt tested Claude Opus 4.8 vs Fable 5 on a full chess app with rules, AI levels, and animations.