What is the difference between Claude Opus 4.1 and Z.ai: GLM 5?

Claude Opus 4.1 is developed by Anthropic while Z.ai: GLM 5 is developed by Zhipu AI. Claude Opus 4.1 has a 200K token context window vs Z.ai: GLM 5's 203K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.1 or Z.ai: GLM 5?

It depends on your use case. Claude Opus 4.1 and Z.ai: GLM 5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.1 cost compared to Z.ai: GLM 5?

Claude Opus 4.1 costs $15/M input tokens and Z.ai: GLM 5 costs $0.8/M input tokens. Z.ai: GLM 5 is $14.20/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 Claude Opus 4.1 and Z.ai: GLM 5 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 and Z.ai: GLM 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 Claude Opus 4.1 and Z.ai: GLM 5?

Claude Opus 4.1 is developed by Anthropic while Z.ai: GLM 5 is developed by Zhipu AI. Claude Opus 4.1 has a 200K token context window vs Z.ai: GLM 5's 203K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.1 or Z.ai: GLM 5?

It depends on your use case. Claude Opus 4.1 and Z.ai: GLM 5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.1 cost compared to Z.ai: GLM 5?

Claude Opus 4.1 costs $15/M input tokens and Z.ai: GLM 5 costs $0.8/M input tokens. Z.ai: GLM 5 is $14.20/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 Claude Opus 4.1 and Z.ai: GLM 5 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 and Z.ai: GLM 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.

Claude Opus 4.1 vs Z.ai: GLM 5: Which Is Better?

Updated Feb 2026

Our Verdict

Claude Opus 4.1

Z.ai: GLM 5

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

Z.ai: GLM 5 is 29x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

Z.ai: GLM 5

Input

$0.80

19× cheaper

Output

$2.56

29× cheaper

Z.ai: GLM 5 is cheaper on both — 19× input, 29× output

Writing DNA

Style Comparison

Similarity

47%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1

Z.ai: GLM 5

61%Vocabulary54%

87wSentence Length17w

0.54Hedging0.37

5.1Bold6.3

6.7Lists4.7

0.38Emoji0.00

1.68Headings0.60

0.13Transitions0.18

Based on 17 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Z.ai: GLM 5 vs MiniMax M3New provider

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

Z.ai: GLM 5 vs Llama 4 MaverickNew provider

Updated Feb 2026

Our Verdict

Claude Opus 4.1

Z.ai: GLM 5

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

Z.ai: GLM 5 is 29x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.1

Input

$15.00

Output

$75.00

Z.ai: GLM 5

Input

$0.80

19× cheaper

Output

$2.56

29× cheaper

Z.ai: GLM 5 is cheaper on both — 19× input, 29× output

Writing DNA

Style Comparison

Similarity

47%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1

Z.ai: GLM 5

61%Vocabulary54%

87wSentence Length17w

0.54Hedging0.37

5.1Bold6.3

6.7Lists4.7

0.38Emoji0.00

1.68Headings0.60

0.13Transitions0.18

Based on 17 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Z.ai: GLM 5 vs MiniMax M3New provider

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

Z.ai: GLM 5 vs Llama 4 MaverickNew provider