Claude 3.7 Thinking Sonnet vs xAI: Grok 4
Compare Claude 3.7 Thinking Sonnet by Anthropic against xAI: Grok 4 by xAI, in 3 community votes, claude 3.7 thinking sonnet wins 100% of head-to-head duels, context windows of 200K vs 256K, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude 3.7 Thinking Sonnet or xAI: Grok 4?
Claude 3.7 Thinking Sonnet is the better choice overall, winning 100% of 3 blind community votes on Rival. Claude 3.7 Thinking Sonnet costs $6/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 3.7 Thinking Sonnet and xAI: Grok 4
Claude 3.7 Thinking Sonnet is made by anthropic while xAI: Grok 4 is from xai. Claude 3.7 Thinking Sonnet has a 200K token context window compared to xAI: Grok 4's 256K. On pricing, Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 3 community votes, Claude 3.7 Thinking Sonnet wins 100% of head-to-head duels.
In 3 community votes, Claude 3.7 Thinking Sonnet wins 100% of head-to-head duels. Claude 3.7 Thinking Sonnet leads in Web Design. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Pick Claude 3.7 Thinking Sonnet. In 3 blind votes, Claude 3.7 Thinking Sonnet wins 100% of the time. That's not luck.
Claude 3.7 Thinking Sonnet particularly excels in Web Design.
Style Comparison
xAI: Grok 4 uses 7.0x more emoji
vs
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
