Claude Sonnet 4.5 vs Grok 3 Beta
Compare Claude Sonnet 4.5 by Anthropic against Grok 3 Beta by xAI, context windows of 200K vs 131K, tested across 43 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4.5 or Grok 3 Beta?
Claude Sonnet 4.5 and Grok 3 Beta are both competitive models. Claude Sonnet 4.5 costs $3/M input tokens vs $2/M for Grok 3 Beta. Context windows: 200K vs 131K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4.5 and Grok 3 Beta
Claude Sonnet 4.5 is made by anthropic while Grok 3 Beta is from xai. Claude Sonnet 4.5 has a 200K token context window compared to Grok 3 Beta's 131K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $2/M for Grok 3 Beta.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Grok 3 Beta is 3.8x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Sonnet 4.5 uses 45.2x more emoji
vsAsk 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.
