gemini-3.8-flash-high vs hy4-preview Benchmark Comparison

Direct benchmark comparison between gemini-3.8-flash-high and hy4-preview based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
gemini-3.8-flash-high	1495	$7.5e-7	86
hy4-preview	1633	$8.34e-7	23

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

Comparison Summary: hy4-preview is the more capable model in this pair, leading by 138 Elo points. Notably, both models are on the Pareto Frontier, representing a true trade-off between higher intelligence and lower cost.