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

Reddit r/singularity Models

Summary

Kimi K2.6 shows noticeable quality gains over K2.5 on MineBench’s 3D Minecraft-structure task while remaining highly cost-effective at $2.35 per run.

**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](https://buymeacoffee.com/ammaaralam) the benchmark **Benchmark:** [https://minebench.ai/](https://minebench.ai/) **Git** **Repository:** [https://github.com/Ammaar-Alam/minebench](https://github.com/Ammaar-Alam/minebench) **Previous Posts:** * [Comparing Opus 4.6 and Opus 4.7](https://www.reddit.com/r/singularity/comments/1sofehv/differences_between_opus_46_and_opus_47_on/) * [Comparing GPT 5.4 and GPT 5.4-Pro](https://www.reddit.com/r/OpenAI/comments/1rr0vi4/differences_between_gpt_54_and_gpt_54pro_on/) * [Comparing GPT 5.2 and GPT 5.4](https://www.reddit.com/r/singularity/comments/1rluvdz/difference_between_gpt_52_and_gpt_54_on_minebench/) * [Comparing GPT 5.2 and GPT 5.3-Codex](https://www.reddit.com/r/OpenAI/comments/1rdwau3/gpt_52_versus_gpt_53codex_on_minebench/) * [Comparing Opus 4.5 and 4.6, also answered some questions about the benchmark](https://www.reddit.com/r/ClaudeAI/comments/1qx3war/difference_between_opus_46_and_opus_45_on_my_3d/) * [Comparing Opus 4.6 and GPT-5.2 Pro](https://www.reddit.com/r/OpenAI/comments/1r3v8sd/difference_between_opus_46_and_gpt52_pro_on_a/) * [Comparing Gemini 3.0 and Gemini 3.1](https://www.reddit.com/r/singularity/comments/1ra6x6n/fixed_difference_between_gemini_30_pro_and_gemini/) **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 :)*
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Kimi K2.6

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Kimi K2.6 is released as an open-source model that achieves state-of-the-art performance on long-horizon coding and agent swarm benchmarks.