Z.ai: GLM 5.2 vs OpenAI o3
Compare Z.ai: GLM 5.2 by Zhipu AI against OpenAI o3 by OpenAI, tested across 53 shared challenges.
Our Verdict
Z.ai: GLM 5.2
OpenAI o3
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 5.2 is 9.1x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Z.ai: GLM 5.2
Input
$1.40
7.1× cheaper
Output
$4.40
9.1× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Z.ai: GLM 5.2 is cheaper on both — 7.1× input, 9.1× output
Writing DNA
Style Comparison
Similarity
46%
Z.ai: GLM 5.2 uses 5.3x more bold
Z.ai: GLM 5.2
OpenAI o3
56%Vocabulary68%
18wSentence Length14w
0.27Hedging0.26
3.7Bold0.7
2.8Lists3.0
0.00Emoji0.00
0.56Headings0.38
0.24Transitions0.12
Based on 27 + 16 text responses
Research
What we learned reading every model
FAQ
