What is the difference between GPT-4 and Horizon Beta?

GPT-4 is developed by OpenAI while Horizon Beta is developed by OpenRouter. GPT-4 has a 8K token context window vs Horizon Beta's 256K. You can compare their actual outputs across 15 challenges on Rival to see how they differ in practice.

Which is better, GPT-4 or Horizon Beta?

It depends on your use case. GPT-4 and Horizon Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 15 challenges so you can judge which fits your needs best.

How much does GPT-4 cost compared to Horizon Beta?

GPT-4 costs $30/M input tokens and Horizon Beta costs $0/M input tokens. Horizon Beta 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-4 and Horizon Beta on Rival?

This page shows a side-by-side comparison of GPT-4 and Horizon Beta 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 Aug 2025

GPT-4vsHorizon Beta

Horizon Beta is cheaper than GPT-4 at $0/M vs $30/M input tokens.

GPT-4 and Horizon Beta compared across 15 shared prompts
Spec	GPT-4	Horizon Beta
Input price	$30/M tokens	Free
Output price	$60/M tokens	Free
Context window	8K tokens	256K tokens
Weights	Closed	—
Free API (OpenRouter)	No	No
Released	May 2023	Aug 2025