deepseek-v4-flash-thinking vs glm-5.1 Benchmark Comparison

Direct benchmark comparison between deepseek-v4-flash-thinking and glm-5.1 based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
deepseek-v4-flash-thinking	1439	$1.12e-7	55
glm-5.1	1472	$9.8e-7	37

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

Comparison Summary: glm-5.1 is the more capable model in this pair, leading by 33 Elo points. Specifically, deepseek-v4-flash-thinking is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.