What is the difference between Google: Gemma 4 31B and xAI: Grok 4.5?

Google: Gemma 4 31B is developed by Google AI while xAI: Grok 4.5 is developed by xAI. Google: Gemma 4 31B has a 262K token context window vs xAI: Grok 4.5's 500K. You can compare their actual outputs across 45 challenges on Rival to see how they differ in practice.

Which is better, Google: Gemma 4 31B or xAI: Grok 4.5?

It depends on your use case. Google: Gemma 4 31B and xAI: Grok 4.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 45 challenges so you can judge which fits your needs best.

How much does Google: Gemma 4 31B cost compared to xAI: Grok 4.5?

Google: Gemma 4 31B costs $0.14/M input tokens and xAI: Grok 4.5 costs $2/M input tokens. Google: Gemma 4 31B is $1.86/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 4.5 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and xAI: Grok 4.5 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 4.5?

Google: Gemma 4 31B is developed by Google AI while xAI: Grok 4.5 is developed by xAI. Google: Gemma 4 31B has a 262K token context window vs xAI: Grok 4.5's 500K. You can compare their actual outputs across 45 challenges on Rival to see how they differ in practice.

Which is better, Google: Gemma 4 31B or xAI: Grok 4.5?

It depends on your use case. Google: Gemma 4 31B and xAI: Grok 4.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 45 challenges so you can judge which fits your needs best.

How much does Google: Gemma 4 31B cost compared to xAI: Grok 4.5?

Google: Gemma 4 31B costs $0.14/M input tokens and xAI: Grok 4.5 costs $2/M input tokens. Google: Gemma 4 31B is $1.86/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 4.5 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and xAI: Grok 4.5 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 4.5: Which Is Better?

Updated Jul 2026

Our Verdict

Google: Gemma 4 31B

xAI: Grok 4.5

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Google: Gemma 4 31B is 15x 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

14× cheaper

Output

$0.40

15× cheaper

xAI: Grok 4.5

Input

$2.00

Output

$6.00

Google: Gemma 4 31B is cheaper on both — 14× input, 15× output

Writing DNA

Style Comparison

Similarity

45%

Google: Gemma 4 31B uses 2.9x more bold

Google: Gemma 4 31B

xAI: Grok 4.5

57%Vocabulary61%

18wSentence Length16w

0.37Hedging0.23

7.1Bold2.5

4.0Lists2.4

0.24Emoji0.09

0.94Headings0.48

0.16Transitions0.06

Based on 23 + 27 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and xAI: Grok 4.5 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 4.5 vs GPT-5New provider

Google: Gemma 4 31B vs Llama 4 MaverickNew provider

Updated Jul 2026

Our Verdict

Google: Gemma 4 31B

xAI: Grok 4.5

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Google: Gemma 4 31B is 15x 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

14× cheaper

Output

$0.40

15× cheaper

xAI: Grok 4.5

Input

$2.00

Output

$6.00

Google: Gemma 4 31B is cheaper on both — 14× input, 15× output

Writing DNA

Style Comparison

Similarity

45%

Google: Gemma 4 31B uses 2.9x more bold

Google: Gemma 4 31B

xAI: Grok 4.5

57%Vocabulary61%

18wSentence Length16w

0.37Hedging0.23

7.1Bold2.5

4.0Lists2.4

0.24Emoji0.09

0.94Headings0.48

0.16Transitions0.06

Based on 23 + 27 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and xAI: Grok 4.5 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 4.5 vs GPT-5New provider

Google: Gemma 4 31B vs Llama 4 MaverickNew provider