Is GPT-4o mini or Claude Opus 5.5 cheaper?

GPT-4o mini is cheaper on output tokens ($0.60 vs $20.00 per 1M).

Which has the larger context window, GPT-4o mini or Claude Opus 5.5?

Claude Opus 5.5 has the larger context window (1M tokens).

GPT-4o mini vs Claude Opus 5.5

GPT-4o mini is cheaper on output tokens, while Claude Opus 5.5 offers a larger context window. Choose GPT-4o mini or Claude Opus 5.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4o mini	Claude Opus 5.5
Provider	CrossModel	CrossModel
Input / 1M tokens	$0.15	$4.00
Output / 1M tokens	$0.60	$20.00
Context window	128K	1M
Parameters	—	—
Open weights	No	No
Released	Jul 2024	Sep 2026

GPT-4o mini details →Claude Opus 5.5 details →

FAQ

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