Claude Haiku 5.5 (High) vs Muse Spark Open (Max) Benchmark Comparison

Direct benchmark comparison between Claude Haiku 5.5 (High) and Muse Spark Open (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	183
Muse Spark Open (Max)	1511	$0.00000125	107

*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 73 Elo points. Specifically, Claude Haiku 5.5 (High) is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.