Claude 3 Haiku vs xAI: Grok 4

Compare Claude 3 Haiku by Anthropic against xAI: Grok 4 by xAI, context windows of 200K vs 256K, tested across 38 shared challenges. Updated April 2026.

Which is better, Claude 3 Haiku or xAI: Grok 4?

Claude 3 Haiku and xAI: Grok 4 are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $3/M for xAI: Grok 4. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3 Haiku and xAI: Grok 4

Claude 3 Haiku is made by anthropic while xAI: Grok 4 is from xai. Claude 3 Haiku has a 200K token context window compared to xAI: Grok 4's 256K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $3/M for xAI: Grok 4.

Our Verdict
xAI: Grok 4
xAI: Grok 4
Claude 3 Haiku
Claude 3 HaikuRunner-up

No community votes yet. On paper, xAI: Grok 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%

xAI: Grok 4 uses 7.0x more emoji

Claude 3 Haiku
xAI: Grok 4
50%Vocabulary53%
22wSentence Length18w
0.71Hedging0.67
0.3Bold2.7
5.9Lists2.7
0.00Emoji0.07
0.00Headings0.86
0.08Transitions0.04
Based on 13 + 21 text responses
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Claude 3 HaikuxAI: Grok 4

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