Is GPT-4.1 Nano or Claude Opus 4.5 cheaper?

GPT-4.1 Nano is cheaper on output tokens ($0.40 vs $25.00 per 1M).

Which has the larger context window, GPT-4.1 Nano or Claude Opus 4.5?

GPT-4.1 Nano has the larger context window (1M tokens).

GPT-4.1 Nano vs Claude Opus 4.5

GPT-4.1 Nano is cheaper on output tokens, while GPT-4.1 Nano offers a larger context window. Choose GPT-4.1 Nano or Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4.1 Nano	Claude Opus 4.5
Provider	Abacus	Abacus
Input / 1M tokens	$0.10	$5.00
Output / 1M tokens	$0.40	$25.00
Context window	1M	200K
Parameters	—	—
Open weights	No	No
Released	Apr 2025	Nov 2025

GPT-4.1 Nano details →Claude Opus 4.5 details →

FAQ

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