grok-4.20-beta-0309-reasoning vs glm-5v-turbo Benchmark Comparison

Direct benchmark comparison between grok-4.20-beta-0309-reasoning and glm-5v-turbo 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	1474	$0.00000125	131
glm-5v-turbo	1440	$0.0000012	16

*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.