GPT-4.1 vs Kimi K2
Compare GPT-4.1 by OpenAI against Kimi K2 by Moonshot AI, tested across 54 shared challenges. Updated May 2026.
Which is better, GPT-4.1 or Kimi K2?
GPT-4.1 and Kimi K2 are both competitive models. GPT-4.1 costs $2/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.
Key Differences Between GPT-4.1 and Kimi K2
GPT-4.1 is made by openai while Kimi K2 is from moonshotai. On pricing, GPT-4.1 costs $2/M input tokens vs $0.57/M for Kimi K2.
API pricing
Per 1M tokens
GPT-4.1
Input
$2.00
Output
$8.00
Kimi K2
Input
$0.57
3.5× cheaper
Output
$2.30
3.5× cheaper
Kimi K2 is cheaper on both — 3.5× input, 3.5× output
Our Verdict
GPT-4.1
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 3.5x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
49%
Kimi K2 uses 2.9x more emoji
GPT-4.1
Kimi K2
58%Vocabulary63%
19wSentence Length19w
0.38Hedging0.35
9.0Bold4.2
6.1Lists3.6
0.24Emoji0.68
1.01Headings0.61
0.07Transitions0.06
Based on 25 + 22 text responses
FAQ
