What is the difference between GPT-5 Nano and GPT-5.4 Nano?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Nano or GPT-5.4 Nano?

It depends on your use case. GPT-5 Nano and GPT-5.4 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How can I compare GPT-5 Nano and GPT-5.4 Nano on Rival?

This page shows a side-by-side comparison of GPT-5 Nano and GPT-5.4 Nano across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Mar 2026

GPT-5 NanovsGPT-5.4 Nano

GPT-5.4 Nano is the newer model, released after GPT-5 Nano.

GPT-5 Nano and GPT-5.4 Nano compared across 53 shared prompts
Spec	GPT-5 Nano	GPT-5.4 Nano
Input price	—	$0.2/M tokens
Output price	—	$1.25/M tokens
Context window	—	400K tokens
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Aug 2025	Mar 2026