What is the difference between DeepSeek V4 Flash and Grok 3?

DeepSeek V4 Flash is developed by DeepSeek while Grok 3 is developed by xAI. DeepSeek V4 Flash has a 1.0M token context window vs Grok 3's 128K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Flash or Grok 3?

It depends on your use case. DeepSeek V4 Flash and Grok 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How can I compare DeepSeek V4 Flash and Grok 3 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash and Grok 3 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 FlashvsGrok 3

DeepSeek V4 Flash has a larger context window than Grok 3 (1.0M tokens vs 128K tokens).

DeepSeek V4 Flash and Grok 3 compared across 52 shared prompts
Spec	DeepSeek V4 Flash	Grok 3
Input price	$0.14/M tokens	—
Output price	$0.28/M tokens	—
Context window	1.0M tokens	128K tokens
Weights	Open	—
Free API (OpenRouter)	No	No
Released	Apr 2026	Feb 2025