Claude 3 Haiku vs Claude 3 Sonnet

Compare Claude 3 Haiku and Claude 3 Sonnet, both from Anthropic, tested across 13 shared challenges. Updated April 2026.

Which is better, Claude 3 Haiku or Claude 3 Sonnet?

Claude 3 Haiku and Claude 3 Sonnet are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $3/M for Claude 3 Sonnet. Compare their real outputs side by side below.

Key Differences Between Claude 3 Haiku and Claude 3 Sonnet

Claude 3 Haiku is made by anthropic while Claude 3 Sonnet is from anthropic. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $3/M for Claude 3 Sonnet.

Our Verdict
Claude 3 Sonnet
Claude 3 Sonnet
Claude 3 Haiku
Claude 3 HaikuRunner-up

No community votes yet. On paper, Claude 3 Sonnet has the edge — bigger model tier.

Claude 3 Haiku is 12x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Claude 3 Haiku uses 34.3x more bold

Claude 3 Haiku
Claude 3 Sonnet
50%Vocabulary48%
22wSentence Length14w
0.71Hedging0.32
0.3Bold0.0
5.9Lists3.6
0.00Emoji0.00
0.00Headings0.00
0.08Transitions0.38
Based on 13 + 4 text responses
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279 AI models invented the same fake scientist.

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