Claude Haiku 4.5 vs Grok Code Fast 1
Compare Claude Haiku 4.5 by Anthropic against Grok Code Fast 1 by xAI, in 34 community votes, claude haiku 4.5 wins 87% of head-to-head duels, context windows of 200K vs 256K, tested across 54 shared challenges. Updated April 2026.
Which is better, Claude Haiku 4.5 or Grok Code Fast 1?
Claude Haiku 4.5 is the better choice overall, winning 87% of 34 blind community votes on Rival. Claude Haiku 4.5 costs $1/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 Haiku 4.5 and Grok Code Fast 1
Claude Haiku 4.5 is made by anthropic while Grok Code Fast 1 is from xai. Claude Haiku 4.5 has a 200K token context window compared to Grok Code Fast 1's 256K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0.2/M for Grok Code Fast 1. In community voting, In 34 community votes, Claude Haiku 4.5 wins 87% of head-to-head duels.
In 34 community votes, Claude Haiku 4.5 wins 87% of head-to-head duels. Claude Haiku 4.5 leads in Reasoning, Web Design, Image Generation. Based on blind community voting from the Rival open dataset of 34+ human preference judgments for this pair.
Pick Claude Haiku 4.5. In 34 blind votes, Claude Haiku 4.5 wins 87% of the time. That's not luck.
Claude Haiku 4.5 particularly excels in Reasoning, Conversation, Image Generation. Grok Code Fast 1 is 3.3x cheaper per token — worth considering if cost matters.
Style Comparison
Claude Haiku 4.5 uses 3.4x more emoji
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