Z.AI: GLM 4.5 Air vs Meta: Muse Spark 1.1
Compare Z.AI: GLM 4.5 Air by Zhipu AI against Meta: Muse Spark 1.1 by Meta AI, context windows of 128K vs 1.0M, tested across 54 shared challenges.
Our Verdict
Meta: Muse Spark 1.1
Z.AI: GLM 4.5 AirRunner-up
No community votes yet. On paper, Meta: Muse Spark 1.1 has the edge — newer, bigger context window.
Z.AI: GLM 4.5 Air is 3.9x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Z.AI: GLM 4.5 Air
Input
$0.20
6.3× cheaper
Output
$1.10
3.9× cheaper
Meta: Muse Spark 1.1
Input
$1.25
Output
$4.25
Z.AI: GLM 4.5 Air is cheaper on both — 6.3× input, 3.9× output
Writing DNA
Style Comparison
Similarity
37%
Z.AI: GLM 4.5 Air uses 9.9x more emoji
Z.AI: GLM 4.5 Air
Meta: Muse Spark 1.1
48%Vocabulary61%
16wSentence Length20w
0.40Hedging0.10
5.4Bold3.7
4.8Lists2.0
0.10Emoji0.01
0.75Headings0.52
0.12Transitions0.02
Based on 15 + 29 text responses
Research
What we learned reading every model
FAQ
