Z.AI: GLM 4.7 vs GPT OSS 120B

Compare Z.AI: GLM 4.7 by OpenRouter against GPT OSS 120B by OpenAI, tested across 49 shared challenges. Updated April 2026.

Which is better, Z.AI: GLM 4.7 or GPT OSS 120B?

Z.AI: GLM 4.7 and GPT OSS 120B are both competitive models. Compare their real outputs side by side below.

Key Differences Between Z.AI: GLM 4.7 and GPT OSS 120B

Z.AI: GLM 4.7 is made by openrouter while GPT OSS 120B is from openai.

Our Verdict
GPT OSS 120B
GPT OSS 120B
Z.AI: GLM 4.7
Z.AI: GLM 4.7Runner-up

No community votes yet. On paper, GPT OSS 120B has the edge — bigger model tier, bigger context window, major provider backing.

Too close to call
Writing DNA

Style Comparison

Similarity
96%

Z.AI: GLM 4.7 uses 2.3x more lists

Z.AI: GLM 4.7
GPT OSS 120B
53%Vocabulary52%
16wSentence Length19w
0.28Hedging0.28
5.7Bold7.4
4.2Lists1.8
0.12Emoji0.15
0.52Headings0.73
0.08Transitions0.17
Based on 21 + 21 text responses
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Z.AI: GLM 4.7GPT OSS 120B

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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