claude-opus-5.5-max vs gpt-5.5-high Benchmark Comparison

Direct benchmark comparison between claude-opus-5.5-max and gpt-5.5-high based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
claude-opus-5.5-max	1818	$0.000004	59
gpt-5.5-high	1482	$0.000005	19

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

Comparison Summary: claude-opus-5.5-max is the more capable model in this pair, leading by 337 Elo points.