What is the difference between Grok 4.1 Fast and Mistral Small 4?

Grok 4.1 Fast is developed by xAI while Mistral Small 4 is developed by Mistral AI. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Grok 4.1 Fast or Mistral Small 4?

It depends on your use case. Grok 4.1 Fast and Mistral Small 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How can I compare Grok 4.1 Fast and Mistral Small 4 on Rival?

This page shows a side-by-side comparison of Grok 4.1 Fast and Mistral Small 4 across shared challenges. You can vote on which model produced the better output, and Pro users can create custom challenges to test both models with their own prompts.

Rival

Updated Mar 16, 2026

Grok 4.1 FastvsMistral Small 4

47 fights queued

Why Grok 4.1 Fast?

Dead even. This one's a coin flip.

Why Mistral Small 4?

4 months newerMar 2026

Favorites

Grok 4.1 FastMistral Small 4

Movie

The Matrix

19998.2

The Dark Knight

20088.5

Album

OK Computer

Radiohead

OK Computer

Radiohead

Book

The Hitch Hiker's Guide to the Galaxy

Douglas Adams

Братья Карамазовы

Фёдор Михайлович Достоевский

City

Tokyo

Japan

Kyoto

Japan

Game

The Hitchhiker's Guide to the Galaxy

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

6 / 47

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

Grok 4.1 Fast

Xai · Nov 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

2 / 47

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

Grok 4.1 Fast

Xai · Nov 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

3 / 47

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

Grok 4.1 Fast

Xai · Nov 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

4 / 47

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Grok 4.1 Fast

Xai · Nov 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026text

Here are five jokes for you:

Why don’t skeletons fight each other? They don’t have the guts.
Why did the scarecrow win an award? Because he was outstanding in his field!
What do you call fake spaghetti? An impasta!
Why can’t you explain puns to kleptomaniacs? Because they always take things literally.
Why did the math book look sad? Because it had too many problems.

Unique Count:

All five jokes are unique—none of them are repeated.

Would you like jokes on a specific topic? 😊

Try this prompt

Vote

5 / 47

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Grok 4.1 Fast

Xai · Nov 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026svg

Try this prompt

Vote

6 / 47

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

Grok 4.1 Fast

Xai · Nov 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Mistral Small 4

Mistral · Mar 2026svg

Try this prompt

Vote

This matchup has more rounds

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Our Verdict

Grok 4.1 Fast

Mistral Small 4Runner-up

No community votes yet. On paper, Grok 4.1 Fast has the edge — bigger model tier, major provider backing.

Too close to call

These are our prompts. Yours will tell you more.

Run Grok 4.1 Fast vs Mistral Small 4 on your actual task. 5 free credits. No card.

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FAQ

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Grok 4.1 Fast vs Mistral Small 4

Which is better, Grok 4.1 Fast or Mistral Small 4?