Is GPT-5.3 Codex or GPT-5.4 cheaper?

GPT-5.3 Codex is cheaper on output tokens ($14.00 vs $15.00 per 1M).

Which has the larger context window, GPT-5.3 Codex or GPT-5.4?

GPT-5.4 has the larger context window (1.1M tokens).

GPT-5.3 Codex vs GPT-5.4

GPT-5.3 Codex is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose GPT-5.3 Codex or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.3 Codex	GPT-5.4
Provider	AIHubMix	AIHubMix
Input / 1M tokens	$1.75	$2.50
Output / 1M tokens	$14.00	$15.00
Context window	400K	1.1M
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Mar 2026

GPT-5.3 Codex details →GPT-5.4 details →

FAQ

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