Claude Opus 4.1 vs Grok 3
Compare Claude Opus 4.1 by Anthropic against Grok 3 by xAI, context windows of 200K vs 128K, tested across 52 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or Grok 3?
Claude Opus 4.1 and Grok 3 are both competitive models. Context windows: 200K vs 128K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.1 and Grok 3
Claude Opus 4.1 is made by anthropic while Grok 3 is from xai. Claude Opus 4.1 has a 200K token context window compared to Grok 3's 128K.
API pricing
Per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
Grok 3
Input
—
Output
—
Our Verdict
Claude Opus 4.1
Grok 3Runner-up
No community votes yet. On paper, Claude Opus 4.1 has the edge — newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
40%
Claude Opus 4.1 uses 9.7x more emoji
Claude Opus 4.1
Grok 3
61%Vocabulary49%
87wSentence Length18w
0.54Hedging0.94
5.1Bold2.5
6.7Lists3.0
0.38Emoji0.04
1.68Headings0.65
0.13Transitions0.08
Based on 17 + 17 text responses
FAQ
