gemini-3.1-pro-preview vs mimo-v2.5-pro Benchmark Comparison

Direct benchmark comparison between gemini-3.1-pro-preview and mimo-v2.5-pro based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
gemini-3.1-pro-preview	1493	$0.000002	70
mimo-v2.5-pro	1465	$0.000001	35

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

Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 28 points. The choice between them should be driven by specific API features or provider preference. Specifically, gemini-3.1-pro-preview is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.