Is GPT-5.5 or GPT-5.4 cheaper?

GPT-5.5 is cheaper on output tokens ($0.00 vs $10.80 per 1M).

Which has the larger context window, GPT-5.5 or GPT-5.4?

Both models offer a similar context window.

GPT-5.5 vs GPT-5.4

GPT-5.5 is cheaper on output tokens. Choose GPT-5.5 or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.5	GPT-5.4
Provider	UnoRouter	UnoRouter
Input / 1M tokens	$0.00	$1.80
Output / 1M tokens	$0.00	$10.80
Context window	1.1M	1.1M
Parameters	—	—
Open weights	No	No
Released	Apr 2026	Mar 2026

GPT-5.5 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.