Fable 5.1 Is an Absolute MONSTER (vs Opus 5)

I asked Fable 5.1 and Opus 5 to build the same treehouse survival game from scratch in Claude Code. Then I played both games. I compare the treehouse, fire, forest, enemies, and real gameplay. Fable 5.1 was the clear winner for me. But the estimated API cost was the biggest surprise. Estimated API cost in this test: Fable 5.1: $380.58 Opus 5: $397.49 These are estimates based on recorded token usage and the report's list prices. Both models ran on Claude Max subscriptions. CHAPTERS 0:00 Fable 5.1 vs Opus 5 0:38 The pricing twist 0:58 Same challenge, same tools 1:11 Building the treehouse 1:52 Fire and lighting 2:40 The forest environment 3:47 Cannibals and animations 4:43 Fable 5.1 gameplay 5:48 Opus 5 gameplay 6:34 Gameplay verdict 6:44 API costs and cache reads 7:07 Final thoughts Tools: Claude Code, Godot, Blender. Forest ambience: Mixkit — https://mixkit.co/free-sound-effects/jungle/ Subscribe for more AI game development tests and model comparisons. #ClaudeCode #GameDev #Godot