claude-opus-4-6-thinking vs kimi-k2.5-thinking Benchmark Comparison

Direct benchmark comparison between claude-opus-4-6-thinking and kimi-k2.5-thinking based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
claude-opus-4-6-thinking	1502	$0.000005	38
kimi-k2.5-thinking	1451	$3.827e-7	22

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

Comparison Summary: claude-opus-4-6-thinking is the more capable model in this pair, leading by 51 Elo points.