Claude Fable 5.2 (xHigh) vs GPT-6.1 Terra (Max) Benchmark Comparison

Direct benchmark comparison between Claude Fable 5.2 (xHigh) and GPT-6.1 Terra (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 5.2 (xHigh)	1836	$0.000008	79
GPT-6.1 Terra (Max)	1679	$0.000001	50

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

Comparison Summary: Claude Fable 5.2 (xHigh) is the more capable model in this pair, leading by 157 Elo points. Notably, both models are on the Pareto Frontier, representing a true trade-off between higher intelligence and lower cost.