Grok 4.7 jumps from #9 to #3 on BuildingBench with 0.783, 66% cheaper than Fable 5.1

ZhitingHu · x · 2026-09-22

Grok 4.7 (xhigh) scored 0.783 on the BuildingBench 3D building/simulation benchmark, leaping from #9 to #3, up from 4.6's 0.695. It now trails only GPT-6 Astra (ultra, 0.843) and Fable 5.1 (max, 0.814). On cost, its median cost per building is $11.43—about 66% cheaper than Fable 5.1's $33.15, though above Astra's $7.11.

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