Is GPT-5.4 mini or Claude Opus 4.5 (latest) cheaper?

GPT-5.4 mini is cheaper on output tokens ($4.50 vs $25.00 per 1M).

Which has the larger context window, GPT-5.4 mini or Claude Opus 4.5 (latest)?

GPT-5.4 mini has the larger context window (400K tokens).

GPT-5.4 mini vs Claude Opus 4.5 (latest)

GPT-5.4 mini is cheaper on output tokens, while GPT-5.4 mini offers a larger context window. Choose GPT-5.4 mini or Claude Opus 4.5 (latest) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.4 mini	Claude Opus 4.5 (latest)
Provider	Neon	Neon
Input / 1M tokens	$0.75	$5.00
Output / 1M tokens	$4.50	$25.00
Context window	400K	200K
Parameters	—	—
Open weights	No	No
Released	Mar 2026	Nov 2025

GPT-5.4 mini details →Claude Opus 4.5 (latest) details →

FAQ

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