Claude Haiku 4.5 vs Kimi K2 Thinking

Compare Claude Haiku 4.5 by Anthropic against Kimi K2 Thinking by Moonshot AI, in 1 community votes, claude haiku 4.5 wins 100% of head-to-head duels, context windows of 200K vs 262K, tested across 53 shared challenges. Updated April 2026.

Which is better, Claude Haiku 4.5 or Kimi K2 Thinking?

Claude Haiku 4.5 is the better choice overall, winning 100% of 1 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $0.6/M for Kimi K2 Thinking. Context windows: 200K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Haiku 4.5 and Kimi K2 Thinking

Claude Haiku 4.5 is made by anthropic while Kimi K2 Thinking is from moonshotai. Claude Haiku 4.5 has a 200K token context window compared to Kimi K2 Thinking's 262K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0.6/M for Kimi K2 Thinking. In community voting, In 1 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels.

In 1 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
Claude Haiku 4.5
Claude Haiku 4.5Winner
Kimi K2 Thinking
Kimi K2 ThinkingRunner-up

Pick Claude Haiku 4.5. In 1 blind votes, Claude Haiku 4.5 wins 100% of the time. That's not luck.

Clear winner
Writing DNA

Style Comparison

Similarity
100%

Claude Haiku 4.5 uses 20.4x more emoji

Claude Haiku 4.5
Kimi K2 Thinking
61%Vocabulary57%
47wSentence Length26w
0.64Hedging0.36
5.1Bold5.8
6.3Lists6.0
0.20Emoji0.00
2.46Headings0.56
0.17Transitions0.06
Based on 24 + 14 text responses
vs

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Claude Haiku 4.5Kimi K2 Thinking
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