Claude 3 Haiku
Nothing here. The model returned empty. We stared at it for a while.
Claude 3 Haiku vs Claude Sonnet 4
Compare Claude 3 Haiku and Claude Sonnet 4, both from Anthropic, context windows of 200K vs 200K, tested across 33 shared challenges. Updated April 2026.
Which is better, Claude 3 Haiku or Claude Sonnet 4?
Claude 3 Haiku and Claude Sonnet 4 are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3 Haiku and Claude Sonnet 4
Claude 3 Haiku is made by anthropic while Claude Sonnet 4 is from anthropic. Claude 3 Haiku has a 200K token context window compared to Claude Sonnet 4's 200K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $3/M for Claude Sonnet 4.
Our Verdict
Claude Sonnet 4
Claude 3 HaikuRunner-up
No community votes yet. On paper, Claude Sonnet 4 has the edge — bigger model tier, newer.
Claude 3 Haiku is 12x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Claude Sonnet 4 uses 87.9x more emoji
Claude 3 Haiku
Claude Sonnet 4
50%Vocabulary62%
22wSentence Length111w
0.71Hedging0.40
0.3Bold5.0
5.9Lists9.3
0.00Emoji0.88
0.00Headings2.16
0.08Transitions0.33
Based on 13 + 17 text responses
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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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