What is the difference between xAI: Grok 4 and Mistral Small 4?

xAI: Grok 4 is developed by xAI while Mistral Small 4 is developed by Mistral AI. xAI: Grok 4 has a 256K token context window vs Mistral Small 4's 262K. You can compare their actual outputs across 38 challenges on Rival to see how they differ in practice.

Which is better, xAI: Grok 4 or Mistral Small 4?

It depends on your use case. xAI: Grok 4 and Mistral Small 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 38 challenges so you can judge which fits your needs best.

How much does xAI: Grok 4 cost compared to Mistral Small 4?

xAI: Grok 4 costs $3/M input tokens and Mistral Small 4 costs $0.15/M input tokens. Mistral Small 4 is $2.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare xAI: Grok 4 and Mistral Small 4 on Rival?

This page shows a side-by-side comparison of xAI: Grok 4 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

xAI: Grok 4vsMistral Small 4

38 fights queued

Why xAI: Grok 4?

Dead even. This one's a coin flip.

Why Mistral Small 4?

24.3x cheaper overall$0.15/M in · $0.60/M out

8 months newerMar 2026

Favorites

xAI: Grok 4Mistral Small 4

Movie

The Matrix

19998.2

The Dark Knight

20088.5

Album

The Dark Side of the Moon

Pink Floyd

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

Portal

Action, Puzzle4.5

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

6 / 38

Estimate Complexityreasoning

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

xAI: Grok 4

Xai · Jul 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 / 38

Logic Puzzlereasoning

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

xAI: Grok 4

Xai · Jul 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

3 / 38

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

xAI: Grok 4

Xai · Jul 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

4 / 38

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

xAI: Grok 4

Xai · Jul 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

5 / 38

Xbox Controller SVG Artimage generation

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

xAI: Grok 4

Xai · Jul 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 / 38

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

xAI: Grok 4

Xai · Jul 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

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Our Verdict

xAI: Grok 4

Mistral Small 4Runner-up

No community votes yet. On paper, xAI: Grok 4 has the edge — bigger model tier, major provider backing.

Mistral Small 4 is 25x cheaper per token — worth considering if cost matters.

Too close to call

These are our prompts. Yours will tell you more.

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

Test with your prompt

FAQ

Keep going

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Mistral Small 4 vs Claude Sonnet 4New provider

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xAI: Grok 4 vs Mistral Small 4

Which is better, xAI: Grok 4 or Mistral Small 4?