deepseek-r1-0528 vs gpt-5.3-chat-latest Benchmark Comparison

Direct benchmark comparison between deepseek-r1-0528 and gpt-5.3-chat-latest based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
deepseek-r1-0528	1422	$5e-7	37
gpt-5.3-chat-latest	1455	$0.00000175	49

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

Comparison Summary: gpt-5.3-chat-latest is the more capable model in this pair, leading by 33 Elo points. However, neither model is currently Pareto-optimal. Developers looking for peak efficiency should investigate gpt-5.2-chat-latest-20260210, which offers a superior benchmark-to-price ratio.