qwen3-235b-a22b-instruct-2507 vs grok-4.20-beta-0309-reasoning Benchmark Comparison

Direct benchmark comparison between qwen3-235b-a22b-instruct-2507 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
qwen3-235b-a22b-instruct-2507	1423	$7.1e-8	8
grok-4.20-beta-0309-reasoning	1480	$0.000002	107

*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 57 Elo points. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate gemini-3.1-pro-preview, which offers a superior benchmark-to-price ratio.