Claude Sonnet 4.5 vs Grok Code Fast 1
Compare Claude Sonnet 4.5 by Anthropic against Grok Code Fast 1 by xAI, in 32 community votes, claude sonnet 4.5 wins 73% of head-to-head duels, context windows of 200K vs 256K, tested across 43 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4.5 or Grok Code Fast 1?
Claude Sonnet 4.5 is the better choice overall, winning 73% of 32 blind community votes on Rival. Claude Sonnet 4.5 costs $3/M input tokens vs $0.2/M for Grok Code Fast 1. Context windows: 200K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4.5 and Grok Code Fast 1
Claude Sonnet 4.5 is made by anthropic while Grok Code Fast 1 is from xai. Claude Sonnet 4.5 has a 200K token context window compared to Grok Code Fast 1's 256K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $0.2/M for Grok Code Fast 1. In community voting, In 32 community votes, Claude Sonnet 4.5 wins 73% of head-to-head duels.
In 32 community votes, Claude Sonnet 4.5 wins 73% of head-to-head duels. Claude Sonnet 4.5 leads in Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 32+ human preference judgments for this pair.
Pick Claude Sonnet 4.5. In 32 blind votes, Claude Sonnet 4.5 wins 73% of the time. That's not luck.
Claude Sonnet 4.5 particularly excels in Image Generation, Web Design. Grok Code Fast 1 is 10x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Sonnet 4.5 uses 7.6x more emoji
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279 AI models invented the same fake scientist.
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