Claude Haiku 4.5 vs GPT-5 Mini

Compare Claude Haiku 4.5 by Anthropic against GPT-5 Mini by OpenAI, in 26 community votes, claude haiku 4.5 wins 76% of head-to-head duels, tested across 46 shared challenges. Updated April 2026.

Which is better, Claude Haiku 4.5 or GPT-5 Mini?

Claude Haiku 4.5 is the better choice overall, winning 76% of 26 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $0.25/M for GPT-5 Mini. Compare their real outputs side by side below.

Key Differences Between Claude Haiku 4.5 and GPT-5 Mini

Claude Haiku 4.5 is made by anthropic while GPT-5 Mini is from openai. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0.25/M for GPT-5 Mini. In community voting, In 26 community votes, Claude Haiku 4.5 wins 76% of head-to-head duels.

In 26 community votes, Claude Haiku 4.5 wins 76% of head-to-head duels. Claude Haiku 4.5 leads in Image Generation, Web Design, Conversation, while GPT-5 Mini leads in Reasoning. Based on blind community voting from the Rival open dataset of 26+ human preference judgments for this pair.

Image Generation: Claude Haiku 4.5 wins 71% of votes
Reasoning: GPT-5 Mini wins 60% of votes
Web Design: Claude Haiku 4.5 wins 100% of votes
Conversation: Claude Haiku 4.5 wins 100% of votes
Our Verdict
Claude Haiku 4.5
Claude Haiku 4.5Winner
GPT-5 Mini
GPT-5 MiniRunner-up

Pick Claude Haiku 4.5. In 26 blind votes, Claude Haiku 4.5 wins 76% of the time. That's not luck.

Pick Claude Haiku 4.5 for Web Design, Conversation, Image Generation. Pick GPT-5 Mini for Reasoning.

Clear winner
Writing DNA

Style Comparison

Similarity
100%

Claude Haiku 4.5 uses 513.9x more bold

Claude Haiku 4.5
GPT-5 Mini
61%Vocabulary62%
47wSentence Length21w
0.64Hedging0.16
5.1Bold0.0
6.3Lists3.4
0.20Emoji0.00
2.46Headings0.00
0.17Transitions0.05
Based on 24 + 15 text responses
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Claude Haiku 4.5GPT-5 Mini

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