Z.AI: GLM 4.7 vs GPT-5 Pro

Compare Z.AI: GLM 4.7 by OpenRouter against GPT-5 Pro by OpenAI, tested across 42 shared challenges. Updated April 2026.

Which is better, Z.AI: GLM 4.7 or GPT-5 Pro?

Z.AI: GLM 4.7 and GPT-5 Pro are both competitive models. Compare their real outputs side by side below.

Key Differences Between Z.AI: GLM 4.7 and GPT-5 Pro

Z.AI: GLM 4.7 is made by openrouter while GPT-5 Pro is from openai.

Our Verdict
GPT-5 Pro
GPT-5 Pro
Z.AI: GLM 4.7
Z.AI: GLM 4.7Runner-up

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

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Z.AI: GLM 4.7 uses 574.7x more bold

Z.AI: GLM 4.7
GPT-5 Pro
53%Vocabulary65%
16wSentence Length15w
0.28Hedging0.32
5.7Bold0.0
4.2Lists2.9
0.12Emoji0.00
0.52Headings0.00
0.08Transitions0.01
Based on 21 + 11 text responses
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Z.AI: GLM 4.7GPT-5 Pro

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
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