Gemini 4 Hydrogen (High) vs Muse Spark Open (Max) Benchmark Comparison

Direct benchmark comparison between Gemini 4 Hydrogen (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
Gemini 4 Hydrogen (High)	1490	$0.0000015	143
Muse Spark Open (Max)	1526	$0.00000125	236

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

Comparison Summary: Muse Spark Open (Max) is the more capable model in this pair, leading by 36 Elo points. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate Claude Fable 5.2 (xHigh), which offers a superior benchmark-to-price ratio.