Claude Sonnet 4
Nothing here. The model returned empty. We stared at it for a while.
Claude Sonnet 4 vs xAI: Grok 4
Compare Claude Sonnet 4 by Anthropic against xAI: Grok 4 by xAI, in 26 community votes, claude sonnet 4 wins 65% of head-to-head duels, context windows of 200K vs 256K, tested across 27 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4 or xAI: Grok 4?
Claude Sonnet 4 is the better choice overall, winning 65% of 26 blind community votes on Rival. Claude Sonnet 4 costs $3/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 Sonnet 4 and xAI: Grok 4
Claude Sonnet 4 is made by anthropic while xAI: Grok 4 is from xai. Claude Sonnet 4 has a 200K token context window compared to xAI: Grok 4's 256K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 26 community votes, Claude Sonnet 4 wins 65% of head-to-head duels.
In 26 community votes, Claude Sonnet 4 wins 65% of head-to-head duels. Claude Sonnet 4 leads in Image Generation, while xAI: Grok 4 leads in Web Design. Based on blind community voting from the Rival open dataset of 26+ human preference judgments for this pair.
Image Generation: Claude Sonnet 4 wins 89% of votes
Web Design: xAI: Grok 4 wins 71% of votes
Our Verdict
Claude Sonnet 4Winner
xAI: Grok 4Runner-up
Pick Claude Sonnet 4. In 26 blind votes, Claude Sonnet 4 wins 65% of the time. That's not luck.
Pick Claude Sonnet 4 for Image Generation. Pick xAI: Grok 4 for Web Design.
Clear winner
Writing DNA
Style Comparison
Similarity
97%
Claude Sonnet 4 uses 12.5x more emoji
Claude Sonnet 4
xAI: Grok 4
62%Vocabulary53%
111wSentence Length18w
0.40Hedging0.67
5.0Bold2.7
9.3Lists2.7
0.88Emoji0.07
2.16Headings0.86
0.33Transitions0.04
Based on 17 + 21 text responses
vs
Ask them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ