Model comparison

GPT-4.1 Nano vs GPT-5 Nano

Compare GPT-4.1 Nano (OpenAI) and GPT-5 Nano (OpenAI) by price, context, capabilities, and latency.

Which should you pick?

Price: GPT-5 Nano is cheaper ($0.05 / 1M tokens input / $0.4 / 1M tokens output) vs GPT-4.1 Nano ($0.1 / 1M tokens input / $0.4 / 1M tokens output).
Context: GPT-4.1 Nano has the larger context window (1M tokens).

Side by side

GPT-4.1 Nano vs GPT-5 Nano — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

Model	Provider	Input	Output	Context	Capabilities	Best for	Latency	Status	Source
GPT-4.1 Nanoopenai/gpt-4.1-nano	OpenAI	$0.1 / 1M tokens	$0.4 / 1M tokens	1M	StreamingTool callingJSON modeVision	image understanding, multimodal chat	844-2401ms	Catalog	Platform curated
GPT-5 Nanoopenai/gpt-5-nano	OpenAI	$0.05 / 1M tokens	$0.4 / 1M tokens	400k	StreamingTool callingJSON modeVision	image understanding, multimodal chat	2076-4211ms	Catalog	Platform curated

FAQ

GPT-4.1 Nano vs GPT-5 Nano FAQ

Is GPT-4.1 Nano or GPT-5 Nano cheaper?

GPT-5 Nano is cheaper ($0.05 / 1M tokens input / $0.4 / 1M tokens output) vs GPT-4.1 Nano ($0.1 / 1M tokens input / $0.4 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, GPT-4.1 Nano or GPT-5 Nano?

GPT-4.1 Nano is larger (1M tokens) vs 400k tokens.

GPT-4.1 Nano vs GPT-5 Nano for Vision: which should I pick?

Both target Vision. Pick GPT-5 Nano to optimize cost, or GPT-4.1 Nano for the longer context window. Test both on real prompts before committing production traffic.

GPT-4.1 Nano details GPT-5 Nano details Pricing calculator OpenAI-compatible quickstart