grok-4.20-beta-0309-reasoning vs mimo-v2-pro Benchmark Comparison

Direct benchmark comparison between grok-4.20-beta-0309-reasoning and mimo-v2-pro based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
grok-4.20-beta-0309-reasoning	1480	$0.000002	132
mimo-v2-pro	1446	$0.000001	26

*These models represent the Pareto Frontier (optimal cost-to-performance).*

Comparison Summary: grok-4.20-beta-0309-reasoning is the more capable model in this pair, leading by 34 Elo points.