Claude 3 Opus vs Kimi K2

Compare Claude 3 Opus by Anthropic against Kimi K2 by Moonshot AI, tested across 7 shared challenges. Updated April 2026.

Which is better, Claude 3 Opus or Kimi K2?

Claude 3 Opus and Kimi K2 are both competitive models. Claude 3 Opus costs $15/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.

Key Differences Between Claude 3 Opus and Kimi K2

Claude 3 Opus is made by anthropic while Kimi K2 is from moonshotai. On pricing, Claude 3 Opus costs $15/M input tokens vs $0.57/M for Kimi K2.

Our Verdict
Claude 3 Opus
Claude 3 Opus
Kimi K2
Kimi K2

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Kimi K2 is 33x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Kimi K2 uses 424.9x more bold

Claude 3 Opus
Kimi K2
54%Vocabulary63%
14wSentence Length19w
0.48Hedging0.35
0.0Bold4.2
3.0Lists3.6
0.00Emoji0.68
0.00Headings0.61
0.06Transitions0.06
Based on 3 + 22 text responses
vs

Ask them anything yourself

Claude 3 OpusKimi K2

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

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