Grok 4.7 Lands at #16 in Agent Arena With +3.96% Gain, But Costs 54% More Per Task

arena · x · 2026-09-27

Agent Arena reports Grok 4.7 (xHigh) debuts at #16 with a +3.96% net improvement score — but at a notably higher cost: $1.14 median per task vs. $0.74 for Grok 4.6 (High, +1.22%) and $0.43 for Grok 4.5 (+1.50%).

Signal breakdown:

xAI markets 4.7 as better than 4.6 at the same price and speed, but Arena data shows both price and capability moving up together — worth watching from a cost-effectiveness angle.

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