What is the difference between Claude Haiku 4.5 and OpenAI o4-mini?

Claude Haiku 4.5 is developed by Anthropic while OpenAI o4-mini is developed by OpenAI. in 3 community votes on Rival, Claude Haiku 4.5 wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 54 challenges.

Which is better, Claude Haiku 4.5 or OpenAI o4-mini?

Based on 3 community votes on Rival, Claude Haiku 4.5 wins 100% of head-to-head matchups against OpenAI o4-mini.

How much does Claude Haiku 4.5 cost compared to OpenAI o4-mini?

Claude Haiku 4.5 costs $1/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. Claude Haiku 4.5 is $0.10/M cheaper per input. Claude Haiku 4.5 also wins more often in community votes, making it the better value.

How are Claude Haiku 4.5 vs OpenAI o4-mini votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 3 votes have been collected for this pair across 54 challenges. All vote data is part of Rival's open dataset.

What is the difference between Claude Haiku 4.5 and OpenAI o4-mini?

Claude Haiku 4.5 is developed by Anthropic while OpenAI o4-mini is developed by OpenAI. in 3 community votes on Rival, Claude Haiku 4.5 wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 54 challenges.

Which is better, Claude Haiku 4.5 or OpenAI o4-mini?

Based on 3 community votes on Rival, Claude Haiku 4.5 wins 100% of head-to-head matchups against OpenAI o4-mini.

How much does Claude Haiku 4.5 cost compared to OpenAI o4-mini?

Claude Haiku 4.5 costs $1/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. Claude Haiku 4.5 is $0.10/M cheaper per input. Claude Haiku 4.5 also wins more often in community votes, making it the better value.

How are Claude Haiku 4.5 vs OpenAI o4-mini votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 3 votes have been collected for this pair across 54 challenges. All vote data is part of Rival's open dataset.

Claude Haiku 4.5 vs OpenAI o4-mini: Which Is Better?

Updated Oct 2025

Our Verdict

Claude Haiku 4.5Winner

OpenAI o4-miniRunner-up

Pick Claude Haiku 4.5. In 3 blind votes, Claude Haiku 4.5 wins 100% of the time. That's not luck.

Clear winner

What do Claude Haiku 4.5 and OpenAI o4-mini say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Haiku 4.5

Input

$1.00

1.1× cheaper

Output

$5.00

OpenAI o4-mini

Input

$1.10

Output

$4.40

1.1× cheaper

Claude Haiku 4.5 wins input (1.1× cheaper)·OpenAI o4-mini wins output (1.1× cheaper)

Writing DNA

Style Comparison

Similarity

40%

Claude Haiku 4.5 uses 513.9x more bold

Claude Haiku 4.5

OpenAI o4-mini

61%Vocabulary73%

47wSentence Length15w

0.64Hedging0.18

5.1Bold0.0

6.3Lists2.1

0.20Emoji0.00

2.46Headings0.00

0.17Transitions0.02

Based on 24 + 10 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

OpenAI o4-mini vs MiniMax M3New provider

OpenAI o4-mini vs Ox AlphaNew provider

Claude Haiku 4.5 vs Grok 4New provider

Updated Oct 2025

Our Verdict

Claude Haiku 4.5Winner

OpenAI o4-miniRunner-up

Pick Claude Haiku 4.5. In 3 blind votes, Claude Haiku 4.5 wins 100% of the time. That's not luck.

Clear winner

What do Claude Haiku 4.5 and OpenAI o4-mini say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Haiku 4.5

Input

$1.00

1.1× cheaper

Output

$5.00

OpenAI o4-mini

Input

$1.10

Output

$4.40

1.1× cheaper

Claude Haiku 4.5 wins input (1.1× cheaper)·OpenAI o4-mini wins output (1.1× cheaper)

Writing DNA

Style Comparison

Similarity

40%

Claude Haiku 4.5 uses 513.9x more bold

Claude Haiku 4.5

OpenAI o4-mini

61%Vocabulary73%

47wSentence Length15w

0.64Hedging0.18

5.1Bold0.0

6.3Lists2.1

0.20Emoji0.00

2.46Headings0.00

0.17Transitions0.02

Based on 24 + 10 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

OpenAI o4-mini vs MiniMax M3New provider

OpenAI o4-mini vs Ox AlphaNew provider

Claude Haiku 4.5 vs Grok 4New provider