claude-opus-5.5-max vs glm-5.3-flash Benchmark Comparison

Direct benchmark comparison between claude-opus-5.5-max and glm-5.3-flash 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
glm-5.3-flash	1475	$1.5e-7	36

*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 343 Elo points.