GLM 5.1vsKimi K3
GLM 5.1 is cheaper than Kimi K3 at $1.4/M vs $3/M input tokens.
| Spec | GLM 5.1 | Kimi K3 |
|---|---|---|
| Input price | $1.4/M tokens | $3/M tokens |
| Output price | $4.4/M tokens | $15/M tokens |
| Context window | 203K tokens | 1.0M tokens |
| Released | Apr 2026 | Jul 2026 |
Our Verdict
Kimi K3
GLM 5.1Runner-up
Not enough votes to call it. On the specs, Kimi K3 has the edge: bigger model tier, newer, bigger context window.
GLM 5.1 costs 3.4x less per token.
Slight edge
API pricing
Cost per 1M tokens
GLM 5.1
Input
$1.40
2.1× cheaper
Output
$4.40
3.4× cheaper
Kimi K3
Input
$3.00
Output
$15.00
GLM 5.1 is cheaper on both — 2.1× input, 3.4× output
Writing DNA
Style Comparison
Similarity
52%
Kimi K3 uses 77.9x more emoji
GLM 5.1
Kimi K3
54%Vocabulary58%
18wSentence Length21w
0.31Hedging0.46
3.6Bold3.6
2.6Lists3.4
0.00Emoji0.78
0.43Headings0.89
0.11Transitions0.17
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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