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  5. Grok 4.1 FastvsMistral Nemo
Updated Nov 2025

Grok 4.1 FastvsMistral Nemo

Grok 4.1 Fast is the newer model, released after Mistral Nemo.

Grok 4.1 Fast and Mistral Nemo compared across 54 shared prompts
SpecGrok 4.1 FastMistral Nemo
Input price—$0.03/M tokens
Output price—$0.07/M tokens
Context window—128K tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedNov 2025Jul 2024
Our Verdict
Grok 4.1 Fast
Grok 4.1 Fast
Mistral Nemo
Mistral NemoRunner-up

Not enough votes to call it. On the specs, Grok 4.1 Fast has the edge: bigger model tier, newer, major provider backing.

Slight edge
API pricing

Cost per 1M tokens

Grok 4.1 Fast
Input
—
Output
—
Mistral Nemo
Input
$0.03
Output
$0.07
Where to run it

4 hosts, cheapest first

Grok 4.1 Fast

No hosts listed on OpenRouter.

Mistral Nemo4 hosts
HostInOutContextUptime
DDeepInfrafp8$0.02 in·$0.03 out·131k·100% upIio.netfp16$0.04 in·$0.16 out·128k·93.4% upPParasailfp8degraded$0.03 in·$0.03 out·131k·99% upNNovitafp8degraded$0.04 in·$0.17 out·60k·70.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.

Writing DNA

Style Comparison

Similarity
26%

Grok 4.1 Fast uses 97.0x more emoji

Grok 4.1 Fast
Mistral Nemo
69%Vocabulary53%
15wSentence Length17w
0.20Hedging0.72
4.3Bold2.9
3.6Lists5.1
0.97Emoji0.00
0.90Headings0.00
0.12Transitions0.14
Based on 28 + 27 text responses
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