GPT-5.1-Codex-Mini vs Kimi K2
Compare GPT-5.1-Codex-Mini by OpenAI against Kimi K2 by Moonshot AI, tested across 55 shared challenges. Updated April 2026.
Which is better, GPT-5.1-Codex-Mini or Kimi K2?
GPT-5.1-Codex-Mini and Kimi K2 are both competitive models. GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex-Mini and Kimi K2
GPT-5.1-Codex-Mini is made by openai while Kimi K2 is from moonshotai. On pricing, GPT-5.1-Codex-Mini costs $1.5/M input tokens vs $0.57/M for Kimi K2.
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — newer, bigger context window, major provider backing.
Style Comparison
Kimi K2 uses 68.5x more emoji
vsAsk them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
