What is the difference between Claude Sonnet 4 and o3 Mini?

Claude Sonnet 4 is developed by Anthropic while o3 Mini is developed by OpenAI. Claude Sonnet 4 has a 200K token context window vs o3 Mini's 64K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4 or o3 Mini?

It depends on your use case. Claude Sonnet 4 and o3 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4 cost compared to o3 Mini?

Claude Sonnet 4 costs $3/M input tokens and o3 Mini costs $1.1/M input tokens. o3 Mini is $1.90/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 and o3 Mini on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4 and o3 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 Claude Sonnet 4 and o3 Mini?

Claude Sonnet 4 is developed by Anthropic while o3 Mini is developed by OpenAI. Claude Sonnet 4 has a 200K token context window vs o3 Mini's 64K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4 or o3 Mini?

It depends on your use case. Claude Sonnet 4 and o3 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4 cost compared to o3 Mini?

Claude Sonnet 4 costs $3/M input tokens and o3 Mini costs $1.1/M input tokens. o3 Mini is $1.90/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 and o3 Mini on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4 and o3 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.

Claude Sonnet 4 vs o3 Mini: Which Is Better?

Updated May 2025

Our Verdict

Claude Sonnet 4

o3 MiniRunner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — bigger model tier, newer, bigger context window.

o3 Mini is 3.4x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Sonnet 4

Input

$3.00

Output

$15.00

o3 Mini

Input

$1.10

2.7× cheaper

Output

$4.40

3.4× cheaper

o3 Mini is cheaper on both — 2.7× input, 3.4× output

Writing DNA

Style Comparison

Similarity

43%

Claude Sonnet 4 uses 87.9x more emoji

Claude Sonnet 4

o3 Mini

62%Vocabulary65%

111wSentence Length17w

0.40Hedging0.74

5.0Bold3.9

9.3Lists1.7

0.88Emoji0.00

2.16Headings0.47

0.33Transitions0.38

Based on 17 + 12 text responses

Research

What we learned reading every model

Claude Sonnet 4 and o3 Mini 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

o3 Mini vs MiniMax M3New provider

o3 Mini vs Claude Opus 4Cross-provider

o3 Mini vs Aurora AlphaNew provider

Updated May 2025

Our Verdict

Claude Sonnet 4

o3 MiniRunner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — bigger model tier, newer, bigger context window.

o3 Mini is 3.4x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Sonnet 4

Input

$3.00

Output

$15.00

o3 Mini

Input

$1.10

2.7× cheaper

Output

$4.40

3.4× cheaper

o3 Mini is cheaper on both — 2.7× input, 3.4× output

Writing DNA

Style Comparison

Similarity

43%

Claude Sonnet 4 uses 87.9x more emoji

Claude Sonnet 4

o3 Mini

62%Vocabulary65%

111wSentence Length17w

0.40Hedging0.74

5.0Bold3.9

9.3Lists1.7

0.88Emoji0.00

2.16Headings0.47

0.33Transitions0.38

Based on 17 + 12 text responses

Research

What we learned reading every model

Claude Sonnet 4 and o3 Mini 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

o3 Mini vs MiniMax M3New provider

o3 Mini vs Claude Opus 4Cross-provider

o3 Mini vs Aurora AlphaNew provider