DeepSeek V4 Pro vs Z.AI: GLM 4.5 Air
Compare DeepSeek V4 Pro by DeepSeek against Z.AI: GLM 4.5 Air by Zhipu AI, context windows of 1.0M vs 128K, tested across 54 shared challenges.
Our Verdict
DeepSeek V4 Pro
Z.AI: GLM 4.5 AirRunner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer, bigger context window.
Z.AI: GLM 4.5 Air is 3.2x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
Z.AI: GLM 4.5 Air
Input
$0.20
8.7× cheaper
Output
$1.10
3.2× cheaper
Z.AI: GLM 4.5 Air is cheaper on both — 8.7× input, 3.2× output
Writing DNA
Style Comparison
Similarity
37%
Z.AI: GLM 4.5 Air uses 2.8x more emoji
DeepSeek V4 Pro
Z.AI: GLM 4.5 Air
57%Vocabulary48%
18wSentence Length16w
0.52Hedging0.40
3.3Bold5.4
2.3Lists4.8
0.04Emoji0.10
0.45Headings0.75
0.15Transitions0.12
Based on 27 + 15 text responses
Research
What we learned reading every model
FAQ
