Notes

  • 05/08/26: The CUDA flash attention branch has also been merged to master, please use the master branch and recompile!
  • 05/07/26: The PR branch has been merged to master. All of the quants and imatrix have been updated with the newest conversion and are ready to re-download. These quants include MTP tensors for when that gets added upstream eventually.
  • 05/05/26: I've updated all the quants to use the fused QKV conversion. The PR branch supports both fused + unfused so it's not necessary to download the new quants, but it may provide a small speed boost.
  • 05/03/26: WIP vision support on this branch: https://github.com/AesSedai/llama.cpp/tree/mimo-v2.5-vision (if it's broken with F16 mmproj, pull the latest commit and recompile, or try the BF16 mmproj) and uploaded mmproj files
  • 05/01/26: This branch includes CUDA flash attention, should speed up PP / TG: https://github.com/AesSedai/llama.cpp/tree/mimo-v2.5-fattn
  • 04/28/26: I recommend pulling and compiling from this PR branch to run the model: https://github.com/ggml-org/llama.cpp/pull/22493.

Model

This is a text-only GGUF quantization of XiaomiMiMo/MiMo-V2.5. This means that image and audio input is not present in this GGUF, and will not be available until support is added upstream in llama.cpp.

This repo contains specialized MoE-quants for MiMo-V2.5. The idea being that given the huge size of the FFN tensors compared to the rest of the tensors in the model, it should be possible to achieve a better quality while keeping the overall size of the entire model smaller compared to a similar naive quantization. To that end, the quantization type default is kept in high quality and the FFN UP + FFN GATE tensors are quanted down along with the FFN DOWN tensors.

Quant Size Mixture PPL 1-(Mean PPL(Q)/PPL(base)) KLD
Q8_0 306.66 GiB (8.50 BPW) Unknown / TBD 5.134769 ± 0.030261 +0.1230% 0.012010 ± 0.000150
Q5_K_M 213.39 GiB (5.92 BPW) Q8_0 / Q5_K / Q5_K / Q6_K 5.147654 ± 0.030377 +0.3743% 0.014752 ± 0.000240
Q4_K_M 177.68 GiB (4.93 BPW) Q8_0 / Q4_K / Q4_K / Q5_K 5.202785 ± 0.030828 +1.4493% 0.020631 ± 0.000251
IQ4_XS 137.75 GiB (3.82 BPW) Q8_0 / IQ3_S / IQ3_S / IQ4_XS 5.272594 ± 0.031193 +2.8105% 0.041508 ± 0.000343
IQ3_S 106.31 GiB (2.95 BPW) Q6_K / IQ2_S / IQ2_S / IQ3_S 5.545001 ± 0.033188 +8.1221% 0.092415 ± 0.000600

kld_graph ppl_graph

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