Z.AI: GLM 4.5 vs GPT-4
Compare Z.AI: GLM 4.5 by Zhipu AI against GPT-4 by OpenAI, context windows of 128K vs 8K, tested across 26 shared challenges.
Our Verdict
Z.AI: GLM 4.5
GPT-4
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 4.5 is 27x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Z.AI: GLM 4.5
Input
$0.60
50× cheaper
Output
$2.20
27× cheaper
GPT-4
Input
$30.00
Output
$60.00
Z.AI: GLM 4.5 is cheaper on both — 50× input, 27× output
Writing DNA
Style Comparison
Similarity
39%
Z.AI: GLM 4.5 uses 13.1x more emoji
Z.AI: GLM 4.5
GPT-4
52%Vocabulary59%
14wSentence Length18w
0.49Hedging1.10
5.5Bold0.8
4.9Lists2.5
0.13Emoji0.00
0.68Headings0.00
0.20Transitions0.45
Based on 21 + 15 text responses
Research
What we learned reading every model
FAQ
