Is Claude Haiku 4.5 or GPT-5.2 Codex cheaper?

Claude Haiku 4.5 is cheaper on output tokens ($0.71 vs $1.14 per 1M).

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

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

Claude Haiku 4.5 vs GPT-5.2 Codex

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

Spec	Claude Haiku 4.5	GPT-5.2 Codex
Provider	QiHang	QiHang
Input / 1M tokens	$0.14	$0.14
Output / 1M tokens	$0.71	$1.14
Context window	200K	400K
Parameters	—	—
Open weights	No	No
Released	Oct 2025	Dec 2025

Claude Haiku 4.5 details →GPT-5.2 Codex details →

FAQ

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