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Claude Opus 4.5 vs GLM 4.7 Flash

Compare Claude Opus 4.5 by Anthropic against GLM 4.7 Flash by Zhipu AI, tested across 53 shared challenges. Updated April 2026.

Which is better, Claude Opus 4.5 or GLM 4.7 Flash?

Claude Opus 4.5 and GLM 4.7 Flash are both competitive models. Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.5 and GLM 4.7 Flash

Claude Opus 4.5 is made by anthropic while GLM 4.7 Flash is from zhipu.

Our Verdict
Claude Opus 4.5
Claude Opus 4.5
GLM 4.7 Flash
GLM 4.7 Flash

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

Too close to call
Writing DNA

Style Comparison

Similarity
77%

Claude Opus 4.5 uses 15.2x more emoji

Claude Opus 4.5
GLM 4.7 Flash
64%Vocabulary52%
55wSentence Length15w
0.86Hedging0.33
5.8Bold5.8
4.5Lists4.7
0.15Emoji0.00
1.59Headings0.68
0.05Transitions0.13
Based on 24 + 19 text responses
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Claude Opus 4.5GLM 4.7 Flash

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
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