Claude 3 Haiku
Nothing here. The model returned empty. We stared at it for a while.
Claude 3 Haiku vs OpenAI o4-mini
Compare Claude 3 Haiku by Anthropic against OpenAI o4-mini by OpenAI, tested across 34 shared challenges. Updated April 2026.
Which is better, Claude 3 Haiku or OpenAI o4-mini?
Claude 3 Haiku and OpenAI o4-mini are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
Key Differences Between Claude 3 Haiku and OpenAI o4-mini
Claude 3 Haiku is made by anthropic while OpenAI o4-mini is from openai. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $1.1/M for OpenAI o4-mini.
Our Verdict
Claude 3 Haiku
OpenAI o4-mini
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude 3 Haiku is 3.5x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
90%
Claude 3 Haiku uses 34.3x more bold
Claude 3 Haiku
OpenAI o4-mini
50%Vocabulary73%
22wSentence Length15w
0.71Hedging0.18
0.3Bold0.0
5.9Lists2.1
0.00Emoji0.00
0.00Headings0.00
0.08Transitions0.02
Based on 13 + 10 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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