Claude Haiku 4.5
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Claude Haiku 4.5 vs GPT-4o mini
Compare Claude Haiku 4.5 by Anthropic against GPT-4o mini by OpenAI, in 3 community votes, claude haiku 4.5 wins 100% of head-to-head duels, context windows of 200K vs 128K, tested across 38 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or GPT-4o mini?
Claude Haiku 4.5 is the better choice overall, winning 100% of 3 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $0.15/M for GPT-4o mini. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and GPT-4o mini
Claude Haiku 4.5 is made by anthropic while GPT-4o mini is from openai. Claude Haiku 4.5 has a 200K token context window compared to GPT-4o mini's 128K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0.15/M for GPT-4o mini. In community voting, In 3 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels.
In 3 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels. Claude Haiku 4.5 leads in Reasoning. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Reasoning: Claude Haiku 4.5 wins 100% of votes
Our Verdict
Claude Haiku 4.5Winner
GPT-4o miniRunner-up
Pick Claude Haiku 4.5. In 3 blind votes, Claude Haiku 4.5 wins 100% of the time. That's not luck.
Claude Haiku 4.5 particularly excels in Reasoning. GPT-4o mini is 8.3x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
94%
Claude Haiku 4.5 uses 20.4x more emoji
Claude Haiku 4.5
GPT-4o mini
61%Vocabulary54%
47wSentence Length18w
0.64Hedging0.84
5.1Bold3.8
6.3Lists3.3
0.20Emoji0.00
2.46Headings1.03
0.17Transitions0.23
Based on 24 + 22 text responses
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