DeepSeek-V4.1-Flash-20260910 (Max) vs Hy4 preview Benchmark Comparison

Direct benchmark comparison between DeepSeek-V4.1-Flash-20260910 (Max) 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
DeepSeek-V4.1-Flash-20260910 (Max)	1476	$4.5e-8	199.5
Hy4 preview	1631	$8.34e-7	50

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

Comparison Summary: Hy4 preview is the more capable model in this pair, leading by 155 Elo points. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate Kimi K3.1 Pro (Max), which offers a superior benchmark-to-price ratio.