Claude Opus 4.1 vs Grok 3 Thinking
Compare Claude Opus 4.1 by Anthropic against Grok 3 Thinking by xAI, context windows of 200K vs 128K, tested across 13 shared challenges. Updated May 2026.
Which is better, Claude Opus 4.1 or Grok 3 Thinking?
Claude Opus 4.1 and Grok 3 Thinking 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 Thinking
Claude Opus 4.1 is made by anthropic while Grok 3 Thinking is from xai. Claude Opus 4.1 has a 200K token context window compared to Grok 3 Thinking's 128K.
API pricing
Per 1M tokens
Claude Opus 4.1
Input
$15.00
Output
$75.00
Grok 3 Thinking
Input
—
Output
—
Our Verdict
Claude Opus 4.1
Grok 3 ThinkingRunner-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 38.4x more emoji
Claude Opus 4.1
Grok 3 Thinking
61%Vocabulary46%
87wSentence Length19w
0.54Hedging1.11
5.1Bold3.3
6.7Lists2.6
0.38Emoji0.00
1.68Headings0.64
0.13Transitions0.25
Based on 17 + 6 text responses
FAQ
