GLM 4.6vsGrok 4.1 Fast
Grok 4.1 Fast is the newer model, released after GLM 4.6.
| Spec | GLM 4.6 | Grok 4.1 Fast |
|---|---|---|
| Input price | $0.4/M tokens | — |
| Output price | $1.75/M tokens | — |
| Context window | 203K tokens | — |
| Weights | Open | — |
| Free API (OpenRouter) | No | No |
| Released | Sep 2025 | Nov 2025 |
Our Verdict
GLM 4.6
Grok 4.1 Fast
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GLM 4.6
Input
$0.40
Output
$1.75
Grok 4.1 Fast
Input
—
Output
—
Where to run it
5 hosts, cheapest first
Grok 4.1 Fast
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
39%
Grok 4.1 Fast uses 6.9x more emoji
GLM 4.6
Grok 4.1 Fast
52%Vocabulary69%
16wSentence Length15w
0.31Hedging0.20
5.1Bold4.3
3.2Lists3.6
0.14Emoji0.97
0.54Headings0.90
0.08Transitions0.12
Based on 28 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
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