Claude 3 Haiku vs GPT-4o (Omni)

Compare Claude 3 Haiku by Anthropic against GPT-4o (Omni) by OpenAI, in 1 community votes, gpt-4o (omni) wins 100% of head-to-head duels, context windows of 200K vs 128K, tested across 52 shared challenges. Updated April 2026.

Which is better, Claude 3 Haiku or GPT-4o (Omni)?

GPT-4o (Omni) is the better choice overall, winning 100% of 1 blind community votes on Rival. Claude 3 Haiku costs $0.25/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 3 Haiku and GPT-4o (Omni)

Claude 3 Haiku is made by anthropic while GPT-4o (Omni) is from openai. Claude 3 Haiku has a 200K token context window compared to GPT-4o (Omni)'s 128K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $2.5/M for GPT-4o (Omni). In community voting, In 1 community votes, GPT-4o (Omni) wins 100% of head-to-head duels.

In 1 community votes, GPT-4o (Omni) wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
GPT-4o (Omni)
GPT-4o (Omni)Winner
Claude 3 Haiku
Claude 3 HaikuRunner-up

Pick GPT-4o (Omni). In 1 blind votes, GPT-4o (Omni) wins 100% of the time. That's not luck.

Claude 3 Haiku is 8.0x cheaper per token — worth considering if cost matters.

Clear winner
Writing DNA

Style Comparison

Similarity
100%

GPT-4o (Omni) uses 2.5x more emoji

Claude 3 Haiku
GPT-4o (Omni)
50%Vocabulary54%
22wSentence Length18w
0.71Hedging0.72
0.3Bold7.3
5.9Lists5.6
0.00Emoji0.03
0.00Headings1.40
0.08Transitions0.26
Based on 13 + 24 text responses
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Claude 3 HaikuGPT-4o (Omni)

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