What is the difference between Horizon Beta and Nemotron 3 Ultra?

Horizon Beta is developed by OpenRouter while Nemotron 3 Ultra is developed by NVIDIA. Horizon Beta has a 256K token context window vs Nemotron 3 Ultra's 1.0M. You can compare their actual outputs across 40 challenges on Rival to see how they differ in practice.

Which is better, Horizon Beta or Nemotron 3 Ultra?

It depends on your use case. Horizon Beta and Nemotron 3 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 40 challenges so you can judge which fits your needs best.

How much does Horizon Beta cost compared to Nemotron 3 Ultra?

Horizon Beta costs $0/M input tokens and Nemotron 3 Ultra costs $0/M input tokens. Nemotron 3 Ultra is $0.00/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 Horizon Beta and Nemotron 3 Ultra on Rival?

This page shows a side-by-side comparison of Horizon Beta 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

Horizon BetavsNemotron 3 Ultra

Nemotron 3 Ultra has a larger context window than Horizon Beta (1.0M tokens vs 256K tokens).

Horizon Beta and Nemotron 3 Ultra compared across 40 shared prompts
Spec	Horizon Beta	Nemotron 3 Ultra
Input price	Free	Free
Output price	Free	Free
Context window	256K tokens	1.0M tokens
Weights	—	Open
Free API (OpenRouter)	No	Yes (1 provider)
Released	Aug 2025	Jun 2026