claude-haiku-5.5-high vs deepseek-v4.1-flash-max Benchmark Comparison

Direct benchmark comparison between claude-haiku-5.5-high and deepseek-v4.1-flash-max based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
claude-haiku-5.5-high	1585	$1e-7	167
deepseek-v4.1-flash-max	1475	$3.6e-8	152

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

Comparison Summary: claude-haiku-5.5-high is the more capable model in this pair, leading by 110 Elo points. Notably, both models are on the Pareto Frontier, representing a true trade-off between higher intelligence and lower cost.