grok-4.20-beta-0309-reasoning vs glm-5.1

Direct benchmark comparison between grok-4.20-beta-0309-reasoning and glm-5.1 based on LMArena Elo and latest API pricing.

Direct Technical Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
grok-4.20-beta-0309-reasoning	1480	$0.000002	115
glm-5.1	1467	$0.00000126	68

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

Conclusion: For developers looking for higher intelligence, grok-4.20-beta-0309-reasoning currently leads with an Elo of 1480.