GLM 4.5 AirvsGPT-4
GLM 4.5 Air is cheaper than GPT-4 at $0.2/M vs $30/M input tokens.
| Spec | GLM 4.5 Air | GPT-4 |
|---|---|---|
| Input price | $0.2/M tokens | $30/M tokens |
| Output price | $1.1/M tokens | $60/M tokens |
| Context window | 128K tokens | 8K tokens |
| Released | Jul 2025 | May 2023 |
Our Verdict
GLM 4.5 Air
GPT-4
Not enough votes to call it. On the specs, nothing separates them.
GLM 4.5 Air costs 55x less per token.
Too close to call
API pricing
Cost per 1M tokens
GLM 4.5 Air
Input
$0.20
150× cheaper
Output
$1.10
55× cheaper
GPT-4
Input
$30.00
Output
$60.00
GLM 4.5 Air is cheaper on both — 150× input, 55× output
Writing DNA
Style Comparison
Similarity
43%
GLM 4.5 Air uses 9.9x more emoji
GLM 4.5 Air
GPT-4
48%Vocabulary59%
16wSentence Length18w
0.40Hedging1.10
5.4Bold0.8
4.8Lists2.5
0.10Emoji0.00
0.75Headings0.00
0.12Transitions0.45
Based on 15 + 15 text responses
Research
What we learned reading every model
FAQ
Common questions
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