MoonshotAI: Kimi K2 0905 vs Kimi K2.5

Compare MoonshotAI: Kimi K2 0905 and Kimi K2.5, both from Moonshot AI, context windows of 262K vs 262K, tested across 54 shared challenges. Updated April 2026.

Which is better, MoonshotAI: Kimi K2 0905 or Kimi K2.5?

MoonshotAI: Kimi K2 0905 and Kimi K2.5 are both competitive models. MoonshotAI: Kimi K2 0905 costs $0.6/M input tokens vs $0.6/M for Kimi K2.5. Context windows: 262K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between MoonshotAI: Kimi K2 0905 and Kimi K2.5

MoonshotAI: Kimi K2 0905 is made by moonshotai while Kimi K2.5 is from moonshotai. MoonshotAI: Kimi K2 0905 has a 262K token context window compared to Kimi K2.5's 262K. On pricing, MoonshotAI: Kimi K2 0905 costs $0.6/M input tokens vs $0.6/M for Kimi K2.5.

Our Verdict
MoonshotAI: Kimi K2 0905
MoonshotAI: Kimi K2 0905
Kimi K2.5
Kimi K2.5

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

Too close to call
Writing DNA

Style Comparison

Similarity
100%

MoonshotAI: Kimi K2 0905 uses 14.6x more emoji

MoonshotAI: Kimi K2 0905
Kimi K2.5
62%Vocabulary61%
19wSentence Length21w
0.17Hedging0.55
3.3Bold4.9
3.4Lists2.8
0.15Emoji0.01
0.83Headings0.56
0.06Transitions0.17
Based on 22 + 20 text responses
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MoonshotAI: Kimi K2 0905Kimi K2.5

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
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