claude-haiku-5.5-high vs gemini-3.1-pro-preview Benchmark Comparison

Direct benchmark comparison between claude-haiku-5.5-high and gemini-3.1-pro-preview based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
claude-haiku-5.5-high	1587	$1e-7	185
gemini-3.1-pro-preview	1487	$0.000002	19

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

Comparison Summary: claude-haiku-5.5-high is the more capable model in this pair, leading by 100 Elo points. Specifically, claude-haiku-5.5-high is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.