claude-opus-4-6-thinking vs gemini-3.1-pro-preview Benchmark Comparison

Direct benchmark comparison between claude-opus-4-6-thinking 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-opus-4-6-thinking	1502	$0.000005	38
gemini-3.1-pro-preview	1493	$0.000002	80

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

Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 9 points. The choice between them should be driven by specific API features or provider preference.