What is the difference between DeepSeek V4 Flash and Horizon Beta?

DeepSeek V4 Flash is developed by DeepSeek while Horizon Beta is developed by OpenRouter. DeepSeek V4 Flash has a 1.0M token context window vs Horizon Beta's 256K. You can compare their actual outputs across 40 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Flash or Horizon Beta?

It depends on your use case. DeepSeek V4 Flash and Horizon Beta 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 DeepSeek V4 Flash cost compared to Horizon Beta?

DeepSeek V4 Flash costs $0.14/M input tokens and Horizon Beta costs $0/M input tokens. Horizon Beta is $0.14/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 DeepSeek V4 Flash and Horizon Beta on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 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 Apr 2026

DeepSeek V4 FlashvsHorizon Beta

Horizon Beta is cheaper than DeepSeek V4 Flash at $0/M vs $0.14/M input tokens.

DeepSeek V4 Flash and Horizon Beta compared across 40 shared prompts
Spec	DeepSeek V4 Flash	Horizon Beta
Input price	$0.14/M tokens	Free
Output price	$0.28/M tokens	Free
Context window	1.0M tokens	256K tokens
Weights	Open	—
Free API (OpenRouter)	No	No
Released	Apr 2026	Aug 2025