GPT-4 vs Kimi K2

Compare GPT-4 by OpenAI against Kimi K2 by Moonshot AI, tested across 16 shared challenges. Updated April 2026.

Which is better, GPT-4 or Kimi K2?

GPT-4 and Kimi K2 are both competitive models. GPT-4 costs $30/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.

Key Differences Between GPT-4 and Kimi K2

GPT-4 is made by openai while Kimi K2 is from moonshotai. On pricing, GPT-4 costs $30/M input tokens vs $0.57/M for Kimi K2.

Our Verdict
GPT-4
GPT-4
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 26x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Kimi K2 uses 68.5x more emoji

GPT-4
Kimi K2
59%Vocabulary63%
18wSentence Length19w
1.10Hedging0.35
0.8Bold4.2
2.5Lists3.6
0.00Emoji0.68
0.00Headings0.61
0.45Transitions0.06
Based on 15 + 22 text responses
vs

Ask them anything yourself

GPT-4Kimi 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

Common questions