What is the difference between GPT-5.4 Pro and Nemotron 3 Ultra?

GPT-5.4 Pro is developed by OpenAI while Nemotron 3 Ultra is developed by NVIDIA. GPT-5.4 Pro has a 1.1M token context window vs Nemotron 3 Ultra's 1.0M. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 Pro or Nemotron 3 Ultra?

It depends on your use case. GPT-5.4 Pro and Nemotron 3 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

How much does GPT-5.4 Pro cost compared to Nemotron 3 Ultra?

GPT-5.4 Pro costs $30/M input tokens and Nemotron 3 Ultra costs $0/M input tokens. Nemotron 3 Ultra is $30.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-5.4 Pro and Nemotron 3 Ultra on Rival?

This page shows a side-by-side comparison of GPT-5.4 Pro and Nemotron 3 Ultra 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 Jun 2026

GPT-5.4 ProvsNemotron 3 Ultra

Nemotron 3 Ultra is cheaper than GPT-5.4 Pro at $0/M vs $30/M input tokens.

GPT-5.4 Pro and Nemotron 3 Ultra compared across 18 shared prompts
Spec	GPT-5.4 Pro	Nemotron 3 Ultra
Input price	$30/M tokens	Free
Output price	$180/M tokens	Free
Context window	1.1M tokens	1.0M tokens
Weights	Closed	Open
Free API (OpenRouter)	No	Yes (1 provider)
Released	Mar 2026	Jun 2026