Claude Haiku 4.5 vs Grok 4
Compare Claude Haiku 4.5 by Anthropic against Grok 4 by xAI, context windows of 200K vs 256K, tested across 53 shared challenges.
Our Verdict
Claude Haiku 4.5
Grok 4
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude Haiku 4.5 is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
3.0× cheaper
Output
$5.00
3.0× cheaper
Grok 4
Input
$3.00
Output
$15.00
Claude Haiku 4.5 is cheaper on both — 3.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
44%
Claude Haiku 4.5 uses 3.9x more transitions
Claude Haiku 4.5
Grok 4
61%Vocabulary53%
47wSentence Length18w
0.64Hedging0.67
5.1Bold2.7
6.3Lists2.7
0.20Emoji0.07
2.46Headings0.86
0.17Transitions0.04
Based on 24 + 21 text responses
Research
What we learned reading every model
FAQ
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