Claude Opus 4.6
Nothing here. The model returned empty. We stared at it for a while.
Claude Opus 4.6 vs xAI: Grok 4
Compare Claude Opus 4.6 by Anthropic against xAI: Grok 4 by xAI, in 2 community votes, claude opus 4.6 wins 100% of head-to-head duels, context windows of 1.0M vs 256K, tested across 38 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.6 or xAI: Grok 4?
Claude Opus 4.6 is the better choice overall, winning 100% of 2 blind community votes on Rival. Claude Opus 4.6 costs $5/M input tokens vs $3/M for xAI: Grok 4. Context windows: 1000K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.6 and xAI: Grok 4
Claude Opus 4.6 is made by anthropic while xAI: Grok 4 is from xai. Claude Opus 4.6 has a 1000K token context window compared to xAI: Grok 4's 256K. On pricing, Claude Opus 4.6 costs $5/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 2 community votes, Claude Opus 4.6 wins 100% of head-to-head duels.
In 2 community votes, Claude Opus 4.6 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 2+ human preference judgments for this pair.
Our Verdict
Claude Opus 4.6Winner
xAI: Grok 4Runner-up
Pick Claude Opus 4.6. In 2 blind votes, Claude Opus 4.6 wins 100% of the time. That's not luck.
Clear winner
Writing DNA
Style Comparison
Similarity
97%
Claude Opus 4.6 uses 3.0x more emoji
Claude Opus 4.6
xAI: Grok 4
53%Vocabulary53%
35wSentence Length18w
0.68Hedging0.67
5.2Bold2.7
2.9Lists2.7
0.21Emoji0.07
1.34Headings0.86
0.03Transitions0.04
Based on 23 + 21 text responses
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