What is the difference between Claude Haiku 4.5 and Mistral Small 4?

Claude Haiku 4.5 is developed by Anthropic while Mistral Small 4 is developed by Mistral AI. Claude Haiku 4.5 has a 200K token context window vs Mistral Small 4's 262K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Claude Haiku 4.5 or Mistral Small 4?

It depends on your use case. Claude Haiku 4.5 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 much does Claude Haiku 4.5 cost compared to Mistral Small 4?

Claude Haiku 4.5 costs $1/M input tokens and Mistral Small 4 costs $0.15/M input tokens. Mistral Small 4 is $0.85/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 Claude Haiku 4.5 and Mistral Small 4 on Rival?

This page shows a side-by-side comparison of Claude Haiku 4.5 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

Claude Haiku 4.5vsMistral Small 4

47 fights queued

Why Claude Haiku 4.5?

Dead even. This one's a coin flip.

Why Mistral Small 4?

8.1x cheaper overall$0.15/M in · $0.60/M out

1.3x more context262K

5 months newerMar 2026

Favorites

Claude Haiku 4.5Mistral Small 4

Movie

Arrival

20167.6

The Dark Knight

20088.5

Album

OK Computer

Radiohead

OK Computer

Radiohead

Book

Don't Look Now and Other Stories

Daphne du Maurier

Братья Карамазовы

Фёдор Михайлович Достоевский

City

Venice

Italy

Kyoto

Japan

Game

Portal 2

Shooter, Puzzle4.6

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

Claude Haiku 4.5

Anthropic · Oct 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

Claude Haiku 4.5

Anthropic · Oct 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

Claude Haiku 4.5

Anthropic · Oct 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

Claude Haiku 4.5

Anthropic · Oct 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

Claude Haiku 4.5

Anthropic · Oct 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

Claude Haiku 4.5

Anthropic · Oct 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

41+ more head-to-head results. Free. Not a trick.

$0No card. No catch. Just a login.

Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy

Find Your Model

Static demos are useful. Your prompt matters more.

Run this matchup on your actual task. 30 seconds. No card.

Can you tell Claude from GPT?

Run your prompt blind. Judge outputs, not logos.

Take the blind test

Our Verdict

Claude Haiku 4.5

Mistral Small 4Runner-up

No community votes yet. On paper, Claude Haiku 4.5 has the edge — bigger model tier, major provider backing.

Mistral Small 4 is 8.3x cheaper per token — worth considering if cost matters.

Too close to call

These are our prompts. Yours will tell you more.

Run Claude Haiku 4.5 vs Mistral Small 4 on your actual task. 5 free credits. No card.

Test with your prompt

FAQ

Keep going

Claude Haiku 4.5 vs MiniMax M2.5New provider

Claude Haiku 4.5 vs Pony AlphaNew provider

Mistral Small 4 vs GPT-4.1 NanoNew provider

This comparison gets 800+ views/month. Your brand could be here.

Advertise

Claude Haiku 4.5 vs Mistral Small 4

Which is better, Claude Haiku 4.5 or Mistral Small 4?