qwen3.6-plus-preview vs grok-4.20-beta-0309-reasoning

Direct benchmark comparison between qwen3.6-plus-preview and grok-4.20-beta-0309-reasoning based on LMArena Elo and latest API pricing.

Direct Technical Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
qwen3.6-plus-preview	1454	$3.25e-7	36
grok-4.20-beta-0309-reasoning	1480	$0.000002	115

*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.