Claude 3 Opus vs GLM 4.7 Flash

Compare Claude 3 Opus by Anthropic against GLM 4.7 Flash by Zhipu AI, context windows of 200K vs 200K, tested across 12 shared challenges. Updated April 2026.

Which is better, Claude 3 Opus or GLM 4.7 Flash?

Claude 3 Opus and GLM 4.7 Flash are both competitive models. Claude 3 Opus 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 3 Opus and GLM 4.7 Flash

Claude 3 Opus is made by anthropic while GLM 4.7 Flash is from zhipu. Claude 3 Opus has a 200K token context window compared to GLM 4.7 Flash's 200K. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.07/M for GLM 4.7 Flash.

Our Verdict
Claude 3 Opus
Claude 3 Opus
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
99%

GLM 4.7 Flash uses 576.7x more bold

Claude 3 Opus
GLM 4.7 Flash
54%Vocabulary52%
14wSentence Length15w
0.48Hedging0.33
0.0Bold5.8
3.0Lists4.7
0.00Emoji0.00
0.00Headings0.68
0.06Transitions0.13
Based on 3 + 19 text responses
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Claude 3 OpusGLM 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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