Is Claude Opus 4.8 or GPT-5.4 cheaper?

Claude Opus 4.8 is cheaper on output tokens ($2.13 vs $10.80 per 1M).

Which has the larger context window, Claude Opus 4.8 or GPT-5.4?

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

Claude Opus 4.8 vs GPT-5.4

Claude Opus 4.8 is cheaper on output tokens, while GPT-5.4 offers a larger context window. Choose Claude Opus 4.8 or GPT-5.4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.8	GPT-5.4
Provider	UnoRouter	UnoRouter
Input / 1M tokens	$0.43	$1.80
Output / 1M tokens	$2.13	$10.80
Context window	1M	1.1M
Parameters	—	—
Open weights	No	No
Released	May 2026	Mar 2026

Claude Opus 4.8 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.