What is the difference between Google: Gemma 4 31B and xAI: Grok 4?

Google: Gemma 4 31B is developed by Google AI while xAI: Grok 4 is developed by xAI. Google: Gemma 4 31B has a 262K token context window vs xAI: Grok 4's 256K. You can compare their actual outputs across 44 challenges on Rival to see how they differ in practice.

Which is better, Google: Gemma 4 31B or xAI: Grok 4?

It depends on your use case. Google: Gemma 4 31B and xAI: Grok 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 44 challenges so you can judge which fits your needs best.

How much does Google: Gemma 4 31B cost compared to xAI: Grok 4?

Google: Gemma 4 31B costs $0.14/M input tokens and xAI: Grok 4 costs $3/M input tokens. Google: Gemma 4 31B is $2.86/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 Google: Gemma 4 31B and xAI: Grok 4 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and xAI: Grok 4 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.

What is the difference between Google: Gemma 4 31B and xAI: Grok 4?

Google: Gemma 4 31B is developed by Google AI while xAI: Grok 4 is developed by xAI. Google: Gemma 4 31B has a 262K token context window vs xAI: Grok 4's 256K. You can compare their actual outputs across 44 challenges on Rival to see how they differ in practice.

Which is better, Google: Gemma 4 31B or xAI: Grok 4?

It depends on your use case. Google: Gemma 4 31B and xAI: Grok 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 44 challenges so you can judge which fits your needs best.

How much does Google: Gemma 4 31B cost compared to xAI: Grok 4?

Google: Gemma 4 31B costs $0.14/M input tokens and xAI: Grok 4 costs $3/M input tokens. Google: Gemma 4 31B is $2.86/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 Google: Gemma 4 31B and xAI: Grok 4 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and xAI: Grok 4 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.

Google: Gemma 4 31B vs xAI: Grok 4: Which Is Better?

Updated Apr 2026

Our Verdict

Google: Gemma 4 31B

xAI: Grok 4Runner-up

No community votes yet. On paper, Google: Gemma 4 31B has the edge — bigger model tier, newer.

Google: Gemma 4 31B is 38x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Google: Gemma 4 31B

Input

$0.14

21× cheaper

Output

$0.40

38× cheaper

xAI: Grok 4

Input

$3.00

Output

$15.00

Google: Gemma 4 31B is cheaper on both — 21× input, 38× output

Writing DNA

Style Comparison

Similarity

38%

Google: Gemma 4 31B uses 3.6x more transitions

Google: Gemma 4 31B

xAI: Grok 4

57%Vocabulary53%

18wSentence Length18w

0.37Hedging0.67

7.1Bold2.7

4.0Lists2.7

0.24Emoji0.07

0.94Headings0.86

0.16Transitions0.04

Based on 23 + 21 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and xAI: Grok 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Google: Gemma 4 31B vs MiniMax M3New provider

xAI: Grok 4 vs GPT-5New provider

Google: Gemma 4 31B vs Llama 4 MaverickNew provider

Updated Apr 2026

Our Verdict

Google: Gemma 4 31B

xAI: Grok 4Runner-up

No community votes yet. On paper, Google: Gemma 4 31B has the edge — bigger model tier, newer.

Google: Gemma 4 31B is 38x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Google: Gemma 4 31B

Input

$0.14

21× cheaper

Output

$0.40

38× cheaper

xAI: Grok 4

Input

$3.00

Output

$15.00

Google: Gemma 4 31B is cheaper on both — 21× input, 38× output

Writing DNA

Style Comparison

Similarity

38%

Google: Gemma 4 31B uses 3.6x more transitions

Google: Gemma 4 31B

xAI: Grok 4

57%Vocabulary53%

18wSentence Length18w

0.37Hedging0.67

7.1Bold2.7

4.0Lists2.7

0.24Emoji0.07

0.94Headings0.86

0.16Transitions0.04

Based on 23 + 21 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and xAI: Grok 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Google: Gemma 4 31B vs MiniMax M3New provider

xAI: Grok 4 vs GPT-5New provider

Google: Gemma 4 31B vs Llama 4 MaverickNew provider