DeepSeek-V4.1-Flash-20260910 (Max) vs Kimi K3.1 Pro (Max) Benchmark Comparison

Direct benchmark comparison between DeepSeek-V4.1-Flash-20260910 (Max) and Kimi K3.1 Pro (Max) 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	$2e-8	218.5
Kimi K3.1 Pro (Max)	1692	$0.000002	35

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

Comparison Summary: Kimi K3.1 Pro (Max) is the more capable model in this pair, leading by 216 Elo points. Notably, both models are on the Pareto Frontier, representing a true trade-off between higher intelligence and lower cost.