What is the difference between Mistral Small 4 and OpenAI o4-mini?

Mistral Small 4 is developed by Mistral AI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Mistral Small 4 or OpenAI o4-mini?

It depends on your use case. Mistral Small 4 and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Mistral Small 4 cost compared to OpenAI o4-mini?

Mistral Small 4 costs $0.15/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. Mistral Small 4 is $0.95/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 Mistral Small 4 and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Mistral Small 4 and OpenAI o4-mini across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between Mistral Small 4 and OpenAI o4-mini?

Mistral Small 4 is developed by Mistral AI while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Mistral Small 4 or OpenAI o4-mini?

It depends on your use case. Mistral Small 4 and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Mistral Small 4 cost compared to OpenAI o4-mini?

Mistral Small 4 costs $0.15/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. Mistral Small 4 is $0.95/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 Mistral Small 4 and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of Mistral Small 4 and OpenAI o4-mini across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Mistral Small 4 vs OpenAI o4-mini: Which Is Better?

Rival

Updated Mar 2026

Our Verdict

OpenAI o4-mini

Mistral Small 4Runner-up

No community votes yet. On paper, OpenAI o4-mini has the edge — bigger model tier, major provider backing.

Mistral Small 4 is 7.3x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Mistral Small 4

Input

$0.15

7.3× cheaper

Output

$0.60

7.3× cheaper

OpenAI o4-mini

Input

$1.10

Output

$4.40

Mistral Small 4 is cheaper on both — 7.3× input, 7.3× output

Writing DNA

Style Comparison

Similarity

14%

Mistral Small 4 uses 899.3x more bold

Mistral Small 4

OpenAI o4-mini

50%Vocabulary73%

18wSentence Length15w

0.58Hedging0.18

9.0Bold0.0

5.6Lists2.1

0.19Emoji0.00

1.10Headings0.00

0.12Transitions0.02

Based on 23 + 10 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Mistral Small 4 vs MiniMax M3New provider

Mistral Small 4 vs Claude Opus 4New provider

Mistral Small 4 vs Gemini 2.5 Pro Preview 06-05New provider

Rival

Updated Mar 2026

Our Verdict

OpenAI o4-mini

Mistral Small 4Runner-up

No community votes yet. On paper, OpenAI o4-mini has the edge — bigger model tier, major provider backing.

Mistral Small 4 is 7.3x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Mistral Small 4

Input

$0.15

7.3× cheaper

Output

$0.60

7.3× cheaper

OpenAI o4-mini

Input

$1.10

Output

$4.40

Mistral Small 4 is cheaper on both — 7.3× input, 7.3× output

Writing DNA

Style Comparison

Similarity

14%

Mistral Small 4 uses 899.3x more bold

Mistral Small 4

OpenAI o4-mini

50%Vocabulary73%

18wSentence Length15w

0.58Hedging0.18

9.0Bold0.0

5.6Lists2.1

0.19Emoji0.00

1.10Headings0.00

0.12Transitions0.02

Based on 23 + 10 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Mistral Small 4 vs MiniMax M3New provider

Mistral Small 4 vs Claude Opus 4New provider

Mistral Small 4 vs Gemini 2.5 Pro Preview 06-05New provider

Rival