claude-sonnet-4-6 vs gpt-5.2-chat-latest-20260210 Benchmark Comparison

Direct benchmark comparison between claude-sonnet-4-6 and gpt-5.2-chat-latest-20260210 based on LMArena Elo and the latest 2026 API pricing.

Direct Technical & Pricing Comparison

Frontier Model	LMArena Elo	API Cost (1M)	Throughput
claude-sonnet-4-6	1461	$0.000003	45
gpt-5.2-chat-latest-20260210	1476	$0.00000175	37

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

Comparison Summary: These models are highly competitive, with a negligible Elo gap of only 15 points. The choice between them should be driven by specific API features or provider preference. Specifically, gpt-5.2-chat-latest-20260210 is currently on the Pareto line, suggesting it offers better systemic value for its performance tier.