Is GPT-5 mini cheaper than GPT-5 nano?

GPT-5 nano is cheaper, at $0.15 per 1M input tokens versus $0.45.

Which has the larger context window, GPT-5 mini or GPT-5 nano?

Both support 128K tokens of context.

Name: GPT-5 mini
Brand: OpenAI
Price: 0.45 USD
Availability: InStock

GPT-5 nano is cheaper on input ($0.15 vs $0.45 per 1M tokens).

Spec	GPT-5 mini	GPT-5 nano
Provider	OpenAI	OpenAI
Modality	Text + Vision	Text
Context window	128K	128K
Input / 1M	$0.45	$0.15best
Output / 1M	$1.80	$0.60best
Released	Jan 2026	Jan 2026
Best for	Chat / Assistant, High-volume / cheap, Image / Vision	High-volume / cheap, Chat / Assistant

Is GPT-5 mini cheaper than GPT-5 nano?: GPT-5 nano is cheaper, at $0.15 per 1M input tokens versus $0.45.
Which has the larger context window, GPT-5 mini or GPT-5 nano?: Both support 128K tokens of context.