GLM 4.5 AirvsGPT-5.6 Terra
GLM 4.5 Air is cheaper than GPT-5.6 Terra at $0.2/M vs $2.5/M input tokens.
| Spec | GLM 4.5 Air | GPT-5.6 Terra |
|---|---|---|
| Input price | $0.2/M tokens | $2.5/M tokens |
| Output price | $1.1/M tokens | $15/M tokens |
| Context window | 128K tokens | 1.1M tokens |
| Released | Jul 2025 | Jul 2026 |
Our Verdict
GPT-5.6 Terra
GLM 4.5 AirRunner-up
Not enough votes to call it. On the specs, GPT-5.6 Terra has the edge: newer, bigger context window.
GLM 4.5 Air costs 14x less per token.
Too close to call
API pricing
Cost per 1M tokens
GLM 4.5 Air
Input
$0.20
13× cheaper
Output
$1.10
14× cheaper
GPT-5.6 Terra
Input
$2.50
Output
$15.00
GLM 4.5 Air is cheaper on both — 13× input, 14× output
Writing DNA
Style Comparison
Similarity
58%
GLM 4.5 Air uses 9.9x more emoji
GLM 4.5 Air
GPT-5.6 Terra
48%Vocabulary57%
16wSentence Length18w
0.40Hedging0.85
5.4Bold2.8
4.8Lists4.6
0.10Emoji0.00
0.75Headings1.12
0.12Transitions0.06
Based on 15 + 27 text responses
Research
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FAQ
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