Gemini 3.5 Flash vs Z.AI: GLM 4.5
Compare Gemini 3.5 Flash by Google AI against Z.AI: GLM 4.5 by Zhipu AI, context windows of 1.0M vs 128K, tested across 54 shared challenges.
Our Verdict
Gemini 3.5 Flash
Z.AI: GLM 4.5Runner-up
No community votes yet. On paper, Gemini 3.5 Flash has the edge — newer, bigger context window.
Z.AI: GLM 4.5 is 4.1x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3.5 Flash
Input
$1.50
Output
$9.00
Z.AI: GLM 4.5
Input
$0.60
2.5× cheaper
Output
$2.20
4.1× cheaper
Z.AI: GLM 4.5 is cheaper on both — 2.5× input, 4.1× output
Writing DNA
Style Comparison
Similarity
40%
Z.AI: GLM 4.5 uses 13.1x more emoji
Gemini 3.5 Flash
Z.AI: GLM 4.5
59%Vocabulary52%
18wSentence Length14w
0.16Hedging0.49
4.4Bold5.5
3.0Lists4.9
0.00Emoji0.13
0.89Headings0.68
0.11Transitions0.20
Based on 27 + 21 text responses
Research
What we learned reading every model
FAQ
