Z.AI: GLM 4.5 Air vs Grok 4.20 Multi-Agent Beta
Compare Z.AI: GLM 4.5 Air by Zhipu AI against Grok 4.20 Multi-Agent Beta by xAI, context windows of 128K vs 2.0M, tested across 53 shared challenges.
Our Verdict
Grok 4.20 Multi-Agent Beta
Z.AI: GLM 4.5 AirRunner-up
No community votes yet. On paper, Grok 4.20 Multi-Agent Beta has the edge — bigger model tier, newer, bigger context window.
Z.AI: GLM 4.5 Air is 5.5x 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
10× cheaper
Output
$1.10
5.5× cheaper
Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00
Z.AI: GLM 4.5 Air is cheaper on both — 10× input, 5.5× output
Writing DNA
Style Comparison
Similarity
49%
Z.AI: GLM 4.5 Air uses 9.9x more emoji
Z.AI: GLM 4.5 Air
Grok 4.20 Multi-Agent Beta
48%Vocabulary59%
16wSentence Length16w
0.40Hedging0.41
5.4Bold2.7
4.8Lists2.4
0.10Emoji0.00
0.75Headings0.26
0.12Transitions0.02
Based on 15 + 23 text responses
Research
What we learned reading every model
FAQ
