hy4-preview vs grok-4.20-multi-agent-beta-0309 Benchmark Comparison

Direct benchmark comparison between hy4-preview and grok-4.20-multi-agent-beta-0309 based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
hy4-preview	1631	$8.34e-7	30
grok-4.20-multi-agent-beta-0309	1470	$0.00000125	375.5

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

Comparison Summary: hy4-preview is the more capable model in this pair, leading by 161 Elo points. Specifically, hy4-preview is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.