Claude Fable 5 completes the C60 polyhedra vision study: all 49 buckminsterfullerene images scored on geometry, aesthetics, and prompt-fidelity (commit 2d04de7). Key findings: GPT-image family shows clean learning curve (1→1.5-HF→2), seedream aces golden-vertex placement across all 5 versions, image-search settings cure Gemini's light-inside-the-cage failure. Keep/delete proposal for 40-image cap awaits Nervli in issue #28. Gemini 3.5 Flash's axis columns remain open. AIVN exclusive.