What is the difference between Google: Gemma 4 31B and Z.ai: GLM 5.1?

Google: Gemma 4 31B is developed by Google AI while Z.ai: GLM 5.1 is developed by Z-ai. Google: Gemma 4 31B has a 262K token context window vs Z.ai: GLM 5.1's 203K. 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 Z.ai: GLM 5.1?

It depends on your use case. Google: Gemma 4 31B and Z.ai: GLM 5.1 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 Z.ai: GLM 5.1?

Google: Gemma 4 31B costs $0.14/M input tokens and Z.ai: GLM 5.1 costs $1.4/M input tokens. Google: Gemma 4 31B is $1.26/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 Z.ai: GLM 5.1 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and Z.ai: GLM 5.1 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 Z.ai: GLM 5.1?

Google: Gemma 4 31B is developed by Google AI while Z.ai: GLM 5.1 is developed by Z-ai. Google: Gemma 4 31B has a 262K token context window vs Z.ai: GLM 5.1's 203K. 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 Z.ai: GLM 5.1?

It depends on your use case. Google: Gemma 4 31B and Z.ai: GLM 5.1 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 Z.ai: GLM 5.1?

Google: Gemma 4 31B costs $0.14/M input tokens and Z.ai: GLM 5.1 costs $1.4/M input tokens. Google: Gemma 4 31B is $1.26/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 Z.ai: GLM 5.1 on Rival?

This page shows a side-by-side comparison of Google: Gemma 4 31B and Z.ai: GLM 5.1 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 Z.ai: GLM 5.1: Which Is Better?

Updated Apr 2026

Our Verdict

Google: Gemma 4 31B

Z.ai: GLM 5.1Runner-up

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

Google: Gemma 4 31B is 11x 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

10.0× cheaper

Output

$0.40

11× cheaper

Z.ai: GLM 5.1

Input

$1.40

Output

$4.40

Google: Gemma 4 31B is cheaper on both — 10.0× input, 11× output

Writing DNA

Style Comparison

Similarity

54%

Google: Gemma 4 31B uses 23.8x more emoji

Google: Gemma 4 31B

Z.ai: GLM 5.1

57%Vocabulary54%

18wSentence Length18w

0.37Hedging0.31

7.1Bold3.6

4.0Lists2.6

0.24Emoji0.00

0.94Headings0.43

0.16Transitions0.11

Based on 23 + 27 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and Z.ai: GLM 5.1 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

Z.ai: GLM 5.1 vs GPT-5New provider

Google: Gemma 4 31B vs Claude Opus 4.1New provider

Updated Apr 2026

Our Verdict

Google: Gemma 4 31B

Z.ai: GLM 5.1Runner-up

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

Google: Gemma 4 31B is 11x 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

10.0× cheaper

Output

$0.40

11× cheaper

Z.ai: GLM 5.1

Input

$1.40

Output

$4.40

Google: Gemma 4 31B is cheaper on both — 10.0× input, 11× output

Writing DNA

Style Comparison

Similarity

54%

Google: Gemma 4 31B uses 23.8x more emoji

Google: Gemma 4 31B

Z.ai: GLM 5.1

57%Vocabulary54%

18wSentence Length18w

0.37Hedging0.31

7.1Bold3.6

4.0Lists2.6

0.24Emoji0.00

0.94Headings0.43

0.16Transitions0.11

Based on 23 + 27 text responses

Research

What we learned reading every model

Google: Gemma 4 31B and Z.ai: GLM 5.1 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

Z.ai: GLM 5.1 vs GPT-5New provider

Google: Gemma 4 31B vs Claude Opus 4.1New provider