GPT-5 Nano

OpenAI · 2 versions

Each version keeps its own price and context.

Model	$ / 1M in / out	Context	Open weights
GPT-5 NanoOpenAI model	$0.05 / $0.40	400K	No	OpenRouter
GPT-5.4 NanoOpenAI model	$0.20 / $1.25	400K	No	OpenRouter