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Claude Opus 4.1 vs GLM 4.7 Flash

Compare Claude Opus 4.1 by Anthropic against GLM 4.7 Flash by Zhipu AI, context windows of 200K vs 200K, tested across 27 shared challenges. Updated April 2026.

Which is better, Claude Opus 4.1 or GLM 4.7 Flash?

Claude Opus 4.1 and GLM 4.7 Flash are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $0.07/M for GLM 4.7 Flash. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.1 and GLM 4.7 Flash

Claude Opus 4.1 is made by anthropic while GLM 4.7 Flash is from zhipu. Claude Opus 4.1 has a 200K token context window compared to GLM 4.7 Flash's 200K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $0.07/M for GLM 4.7 Flash.

Our Verdict
Claude Opus 4.1
Claude Opus 4.1
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.

GLM 4.7 Flash is 188x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
76%

Claude Opus 4.1 uses 38.4x more emoji

Claude Opus 4.1
GLM 4.7 Flash
61%Vocabulary52%
87wSentence Length15w
0.54Hedging0.33
5.1Bold5.8
6.7Lists4.7
0.38Emoji0.00
1.68Headings0.68
0.13Transitions0.13
Based on 17 + 19 text responses
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Claude Opus 4.1GLM 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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