gpt-6-sol-max vs grok-4.20-beta-0309-reasoning Benchmark Comparison

Direct benchmark comparison between gpt-6-sol-max and grok-4.20-beta-0309-reasoning based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
gpt-6-sol-max	1686	$0.000002	119
grok-4.20-beta-0309-reasoning	1471	$0.00000125	63

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

Comparison Summary: gpt-6-sol-max is the more capable model in this pair, leading by 214 Elo points.