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

Claude Sonnet 4.5 is developed by Anthropic while Mistral Small 4 is developed by Mistral AI. Claude Sonnet 4.5 has a 200K token context window vs Mistral Small 4's 262K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

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

It depends on your use case. Claude Sonnet 4.5 and Mistral Small 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Mistral Small 4?

Claude Sonnet 4.5 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 Claude Sonnet 4.5 and Mistral Small 4 on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Mistral Small 4 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 Claude Sonnet 4.5 and Mistral Small 4?

Claude Sonnet 4.5 is developed by Anthropic while Mistral Small 4 is developed by Mistral AI. Claude Sonnet 4.5 has a 200K token context window vs Mistral Small 4's 262K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

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

It depends on your use case. Claude Sonnet 4.5 and Mistral Small 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Mistral Small 4?

Claude Sonnet 4.5 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 Claude Sonnet 4.5 and Mistral Small 4 on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Mistral Small 4 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.

Claude Sonnet 4.5 vs Mistral Small 4: Which Is Better?

Updated Mar 2026

Our Verdict

Claude Sonnet 4.5

Mistral Small 4Runner-up

No community votes yet. On paper, Claude Sonnet 4.5 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

API pricing

Cost per 1M tokens

Claude Sonnet 4.5

Input

$3.00

Output

$15.00

Mistral Small 4

Input

$0.15

20× cheaper

Output

$0.60

25× cheaper

Mistral Small 4 is cheaper on both — 20× input, 25× output

Writing DNA

Style Comparison

Similarity

47%

Claude Sonnet 4.5 uses 5.3x more sentence length

Claude Sonnet 4.5

Mistral Small 4

64%Vocabulary50%

94wSentence Length18w

0.48Hedging0.58

4.9Bold9.0

8.0Lists5.6

0.45Emoji0.19

1.91Headings1.10

0.07Transitions0.12

Based on 20 + 23 text responses

Research

What we learned reading every model

Claude Sonnet 4.5 and Mistral Small 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude Sonnet 4.5 vs MiniMax M3New provider

Claude Sonnet 4.5 vs Aurora AlphaNew provider

Claude Sonnet 4.5 vs GPT-4.1 NanoNew provider

Updated Mar 2026

Our Verdict

Claude Sonnet 4.5

Mistral Small 4Runner-up

No community votes yet. On paper, Claude Sonnet 4.5 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

API pricing

Cost per 1M tokens

Claude Sonnet 4.5

Input

$3.00

Output

$15.00

Mistral Small 4

Input

$0.15

20× cheaper

Output

$0.60

25× cheaper

Mistral Small 4 is cheaper on both — 20× input, 25× output

Writing DNA

Style Comparison

Similarity

47%

Claude Sonnet 4.5 uses 5.3x more sentence length

Claude Sonnet 4.5

Mistral Small 4

64%Vocabulary50%

94wSentence Length18w

0.48Hedging0.58

4.9Bold9.0

8.0Lists5.6

0.45Emoji0.19

1.91Headings1.10

0.07Transitions0.12

Based on 20 + 23 text responses

Research

What we learned reading every model

Claude Sonnet 4.5 and Mistral Small 4 have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude Sonnet 4.5 vs MiniMax M3New provider

Claude Sonnet 4.5 vs Aurora AlphaNew provider

Claude Sonnet 4.5 vs GPT-4.1 NanoNew provider