GPT-5.6 Sol vs Fable 5 vs Grok 4.5: a car racing game

GPT-5.6 Sol vs Fable 5 vs Grok 4.5. Built a car racing game with a UX-over-UI focus, using /design command. Parameters we reviewed: Car speed, crash behavior, scoring, smoothness, and feel.

Results:

• Grok 4.5: best overall performance
• Fable 5: a close second, nearly matching Grok 4.5
• GPT-5.6 Sol: great UI, weak gameplay (excess drift and friction)

Ranking (based on actual gameplay):

• Grok 4.5: 9/10
• Fable 5: 8/10
• GPT-5.6 Sol: 7/10 (UI was 10/10, gameplay wasn't)

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