Claude 3.7 Thinking Sonnet vs Z.ai: GLM 5.2
Compare Claude 3.7 Thinking Sonnet by Anthropic against Z.ai: GLM 5.2 by Zhipu AI, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
Z.ai: GLM 5.2
Claude 3.7 Thinking SonnetRunner-up
No community votes yet. On paper, Z.ai: GLM 5.2 has the edge — bigger model tier, newer, bigger context window.
Z.ai: GLM 5.2 is 6.8x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude 3.7 Thinking Sonnet
Input
$6.00
Output
$30.00
Z.ai: GLM 5.2
Input
$1.40
4.3× cheaper
Output
$4.40
6.8× cheaper
Z.ai: GLM 5.2 is cheaper on both — 4.3× input, 6.8× output
Writing DNA
Style Comparison
Similarity
44%
Claude 3.7 Thinking Sonnet uses 3.3x more headings
Claude 3.7 Thinking Sonnet
Z.ai: GLM 5.2
61%Vocabulary56%
49wSentence Length18w
0.64Hedging0.27
2.2Bold3.7
4.5Lists2.8
0.00Emoji0.00
1.81Headings0.56
0.21Transitions0.24
Based on 21 + 27 text responses
Research
What we learned reading every model
FAQ
