Is GPT-5.2 or Claude Sonnet 4.5 cheaper?

GPT-5.2 is cheaper on output tokens ($2.00 vs $2.14 per 1M).

Which has the larger context window, GPT-5.2 or Claude Sonnet 4.5?

GPT-5.2 has the larger context window (400K tokens).

GPT-5.2 vs Claude Sonnet 4.5

GPT-5.2 is cheaper on output tokens, while GPT-5.2 offers a larger context window. Choose GPT-5.2 or Claude Sonnet 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.2	Claude Sonnet 4.5
Provider	QiHang	QiHang
Input / 1M tokens	$0.25	$0.43
Output / 1M tokens	$2.00	$2.14
Context window	400K	200K
Parameters	—	—
Open weights	No	No
Released	Dec 2025	Sep 2025

GPT-5.2 details →Claude Sonnet 4.5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.