Is GPT-5.3 Chat (latest) or GPT-5.4 cheaper?

GPT-5.3 Chat (latest) is cheaper on output tokens ($14.00 vs $22.50 per 1M).

Which has the larger context window, GPT-5.3 Chat (latest) or GPT-5.4?

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

GPT-5.3 Chat (latest) vs GPT-5.4

GPT-5.3 Chat (latest) is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose GPT-5.3 Chat (latest) 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 Chat (latest)	GPT-5.4
Provider	OrcaRouter	OrcaRouter
Input / 1M tokens	$1.75	$5.00
Output / 1M tokens	$14.00	$22.50
Context window	128K	1.1M
Parameters	—	—
Open weights	No	No
Released	Mar 2026	Mar 2026

GPT-5.3 Chat (latest) 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.