Claude Fable 5.1 (Max) vs Muse Spark 1.1 Benchmark Comparison

Direct benchmark comparison between Claude Fable 5.1 (Max) and Muse Spark 1.1 based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
Claude Fable 5.1 (Max)	1502	$0.00001	68
Muse Spark 1.1	1490	$0.00000125	207

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

Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 12 points. The choice between them should be driven by specific API features or provider preference. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate hy4-preview, which offers a superior benchmark-to-price ratio.