Differences Between Kimi K2.5 and Kimi K2.6 on MineBench

Some Notes:

• The one caveat though is that I find Kimi's results to be quite inconsistent; the model clearly has a very high ceiling, but you'll see that some of it's builds (in my opinion) lack in quality compared to the others (though they're all a massive improvement from Kimi K2.5)
• Total cost was $2.35
  • Think this is by far the most cost effective model for it's performance
  • If you enjoy these posts please feel free to help fund the benchmark

Benchmark: https://minebench.ai/
Git Repository: https://github.com/Ammaar-Alam/minebench

Previous Posts:

• Comparing Opus 4.6 and Opus 4.7
• Comparing GPT 5.4 and GPT 5.4-Pro
• Comparing GPT 5.2 and GPT 5.4
• Comparing GPT 5.2 and GPT 5.3-Codex
• Comparing Opus 4.5 and 4.6, also answered some questions about the benchmark
• Comparing Opus 4.6 and GPT-5.2 Pro
• Comparing Gemini 3.0 and Gemini 3.1

Previous Posts:

Extra Information (if you're confused):

Essentially it's a benchmark that tests how well a model can create a 3D Minecraft like structure.

So the models are given a palette of blocks (think of them like legos) and a prompt of what to build, so like the first prompt you see in the post was a fighter jet. Then the models had to build a fighter jet by returning a JSON in which they gave the coordinate of each block/lego (x, y, z). It's interesting to see which model is able to create a better 3D representation of the given prompt.

The smarter models tend to design much more detailed and intricate builds. The repository readme might provide might help give a better understanding.

(Disclaimer: This is a public benchmark I created, so technically self-promotion :)