Z.AI: GLM 4.5 Air vs Z.ai: GLM 5.2
Compare Z.AI: GLM 4.5 Air and Z.ai: GLM 5.2, both from Zhipu AI, context windows of 128K vs 1.0M, tested across 54 shared challenges.
Our Verdict
Z.ai: GLM 5.2
Z.AI: GLM 4.5 AirRunner-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 4.5 Air is 4.0x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Z.AI: GLM 4.5 Air
Input
$0.20
7.0× cheaper
Output
$1.10
4.0× cheaper
Z.ai: GLM 5.2
Input
$1.40
Output
$4.40
Z.AI: GLM 4.5 Air is cheaper on both — 7.0× input, 4.0× output
Writing DNA
Style Comparison
Similarity
46%
Z.AI: GLM 4.5 Air uses 9.9x more emoji
Z.AI: GLM 4.5 Air
Z.ai: GLM 5.2
48%Vocabulary56%
16wSentence Length18w
0.40Hedging0.27
5.4Bold3.7
4.8Lists2.8
0.10Emoji0.00
0.75Headings0.56
0.12Transitions0.24
Based on 15 + 27 text responses
Research
What we learned reading every model
FAQ
