Claude Haiku 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Haiku 4.5 vs GPT-4o (Omni)
Compare Claude Haiku 4.5 by Anthropic against GPT-4o (Omni) by OpenAI, in 5 community votes, claude haiku 4.5 wins 67% of head-to-head duels, context windows of 200K vs 128K, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or GPT-4o (Omni)?
Claude Haiku 4.5 is the better choice overall, winning 67% of 5 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $2.5/M for GPT-4o (Omni). Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and GPT-4o (Omni)
Claude Haiku 4.5 is made by anthropic while GPT-4o (Omni) is from openai. Claude Haiku 4.5 has a 200K token context window compared to GPT-4o (Omni)'s 128K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $2.5/M for GPT-4o (Omni). In community voting, In 5 community votes, Claude Haiku 4.5 wins 67% of head-to-head duels.
In 5 community votes, Claude Haiku 4.5 wins 67% of head-to-head duels. Claude Haiku 4.5 has the edge overall, but performance varies by task type. Based on blind community voting from the Rival open dataset of 5+ human preference judgments for this pair.
Web Design: Claude Haiku 4.5 and GPT-4o (Omni) are tied
Our Verdict
Claude Haiku 4.5Winner
GPT-4o (Omni)Runner-up
Pick Claude Haiku 4.5. In 5 blind votes, Claude Haiku 4.5 wins 67% of the time. That's not luck.
Clear winner
Writing DNA
Style Comparison
Similarity
100%
Claude Haiku 4.5 uses 8.1x more emoji
Claude Haiku 4.5
GPT-4o (Omni)
61%Vocabulary54%
47wSentence Length18w
0.64Hedging0.72
5.1Bold7.3
6.3Lists5.6
0.20Emoji0.03
2.46Headings1.40
0.17Transitions0.26
Based on 24 + 24 text responses
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