What is the difference between Z.AI: GLM 4.5 and GPT-5 Pro?

Z.AI: GLM 4.5 is developed by Zhipu AI while GPT-5 Pro is developed by OpenAI. Z.AI: GLM 4.5 has a 128K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, Z.AI: GLM 4.5 or GPT-5 Pro?

It depends on your use case. Z.AI: GLM 4.5 and GPT-5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Z.AI: GLM 4.5 cost compared to GPT-5 Pro?

Z.AI: GLM 4.5 costs $0.6/M input tokens and GPT-5 Pro costs $15/M input tokens. Z.AI: GLM 4.5 is $14.40/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 Z.AI: GLM 4.5 and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of Z.AI: GLM 4.5 and GPT-5 Pro 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 Z.AI: GLM 4.5 and GPT-5 Pro?

Z.AI: GLM 4.5 is developed by Zhipu AI while GPT-5 Pro is developed by OpenAI. Z.AI: GLM 4.5 has a 128K token context window vs GPT-5 Pro's 400K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, Z.AI: GLM 4.5 or GPT-5 Pro?

It depends on your use case. Z.AI: GLM 4.5 and GPT-5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Z.AI: GLM 4.5 cost compared to GPT-5 Pro?

Z.AI: GLM 4.5 costs $0.6/M input tokens and GPT-5 Pro costs $15/M input tokens. Z.AI: GLM 4.5 is $14.40/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 Z.AI: GLM 4.5 and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of Z.AI: GLM 4.5 and GPT-5 Pro 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.

Z.AI: GLM 4.5 vs GPT-5 Pro: Which Is Better?

Updated Oct 2025

Our Verdict

GPT-5 Pro

Z.AI: GLM 4.5Runner-up

No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window.

Z.AI: GLM 4.5 is 55x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Z.AI: GLM 4.5

Input

$0.60

25× cheaper

Output

$2.20

55× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

Z.AI: GLM 4.5 is cheaper on both — 25× input, 55× output

Writing DNA

Style Comparison

Similarity

34%

Z.AI: GLM 4.5 uses 545.8x more bold

Z.AI: GLM 4.5

GPT-5 Pro

52%Vocabulary65%

14wSentence Length15w

0.49Hedging0.32

5.5Bold0.0

4.9Lists2.9

0.13Emoji0.00

0.68Headings0.00

0.20Transitions0.01

Based on 21 + 11 text responses

Research

What we learned reading every model

Z.AI: GLM 4.5 and GPT-5 Pro 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

Z.AI: GLM 4.5 vs MiniMax M3New provider

Z.AI: GLM 4.5 vs Aurora AlphaNew provider

Z.AI: GLM 4.5 vs Grok 3New provider

Updated Oct 2025

Our Verdict

GPT-5 Pro

Z.AI: GLM 4.5Runner-up

No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window.

Z.AI: GLM 4.5 is 55x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Z.AI: GLM 4.5

Input

$0.60

25× cheaper

Output

$2.20

55× cheaper

GPT-5 Pro

Input

$15.00

Output

$120.00

Z.AI: GLM 4.5 is cheaper on both — 25× input, 55× output

Writing DNA

Style Comparison

Similarity

34%

Z.AI: GLM 4.5 uses 545.8x more bold

Z.AI: GLM 4.5

GPT-5 Pro

52%Vocabulary65%

14wSentence Length15w

0.49Hedging0.32

5.5Bold0.0

4.9Lists2.9

0.13Emoji0.00

0.68Headings0.00

0.20Transitions0.01

Based on 21 + 11 text responses

Research

What we learned reading every model

Z.AI: GLM 4.5 and GPT-5 Pro 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

Z.AI: GLM 4.5 vs MiniMax M3New provider

Z.AI: GLM 4.5 vs Aurora AlphaNew provider

Z.AI: GLM 4.5 vs Grok 3New provider