Claude 2 vs Z.ai: GLM 5.1
Compare Claude 2 by Anthropic against Z.ai: GLM 5.1 by Z-ai, context windows of 100K vs 203K, tested across 5 shared challenges.
Our Verdict
Claude 2
Z.ai: GLM 5.1
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Z.ai: GLM 5.1 is 7.4x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 2
Input
$11.02
Output
$32.68
Z.ai: GLM 5.1
Input
$1.40
7.9× cheaper
Output
$4.40
7.4× cheaper
Z.ai: GLM 5.1 is cheaper on both — 7.9× input, 7.4× output
Writing DNA
Style Comparison
Similarity
48%
Z.ai: GLM 5.1 uses 30.6x more hedging
Claude 2
Z.ai: GLM 5.1
65%Vocabulary54%
13wSentence Length18w
0.00Hedging0.31
0.0Bold3.6
10.2Lists2.6
0.00Emoji0.00
0.00Headings0.43
0.00Transitions0.11
Based on 2 + 27 text responses
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