gemini-3-flash vs grok-4-1-fast-reasoning Benchmark Comparison

Direct benchmark comparison between gemini-3-flash and grok-4-1-fast-reasoning based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
gemini-3-flash	1474	$5e-7	67
grok-4-1-fast-reasoning	1432	$2e-7	99

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

Comparison Summary: gemini-3-flash is the more capable model in this pair, leading by 42 Elo points. Specifically, gemini-3-flash is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.