Opus 5 Crushes Fable 5 in 3D Physics: All Scenes Pass at Half the Cost

A user tested four models on creating HTML-based 3D physics scenes (tornado, wrecking ball, bridge collapse). Opus 5 nailed all three for $1.40, while Fable 5 cost $2.82 and failed on details. GPT-5.6 and Kimi K3 also had major physics errors.

• comparison
• Cost Efficiency
• Claude Opus 5
• 3D physics