Claude Fable 5.1 (Max) vs Qwen3.8-Max Benchmark Comparison

Direct benchmark comparison between Claude Fable 5.1 (Max) and Qwen3.8-Max 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)	1504	$0.00001	46
Qwen3.8-Max	1482	$0.000002	31

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

Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 22 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 Kimi K3.1 Pro (Max), which offers a superior benchmark-to-price ratio.