What is the difference between Gemma 4 31B and Grok 3?

Gemma 4 31B is developed by Google AI while Grok 3 is developed by xAI. Gemma 4 31B has a 262K token context window vs Grok 3's 128K. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Gemma 4 31B or Grok 3?

It depends on your use case. Gemma 4 31B and Grok 3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How can I compare Gemma 4 31B and Grok 3 on Rival?

This page shows a side-by-side comparison of Gemma 4 31B 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

Gemma 4 31BvsGrok 3

Gemma 4 31B has a larger context window than Grok 3 (262K tokens vs 128K tokens).

Gemma 4 31B and Grok 3 compared across 43 shared prompts
Spec	Gemma 4 31B	Grok 3
Input price	$0.14/M tokens	—
Output price	$0.4/M tokens	—
Context window	262K tokens	128K tokens
Weights	Open	—
Free API (OpenRouter)	Yes (1 provider)	No
Released	Apr 2026	Feb 2025