MiMo-V2.6 Flash GGUF for DwarfStar

GGUF files for the MiMo-V2.6 Flash port in DwarfStar (DS4), branch kernelpool/ds4:mimo-v26 (pull request: TODO link). Metal only.

File Size Content
MiMo-V2.6-Flash-MXFP4.gguf 157.4 GiB Main model, mimo2 layout: the checkpoint's own MXFP4 experts repacked without requantization, Q8_0 attention, dense and output weights, BF16 embeddings, the three MTP blocks
MiMo-V2.6-Flash-DFlash-Q8_0.gguf 1.5 GiB DFlash drafter sidecar, dflash layout plus the mask embedding and value scale DS4 needs
MiMo-V2.6-Flash-Vision-F32.gguf 2.7 GiB Vision encoder, lossless (recommended)
MiMo-V2.6-Flash-Vision-Q8_0.gguf 0.7 GiB Vision encoder, Q8_0 matrices, smaller and measurably less exact

Run

git clone -b mimo-v26 https://github.com/kernelpool/ds4 && cd ds4 && make
./ds4 -m MiMo-V2.6-Flash-MXFP4.gguf --mtp
./ds4 -m MiMo-V2.6-Flash-MXFP4.gguf --mtp --vision MiMo-V2.6-Flash-Vision-F32.gguf
./ds4-server -m MiMo-V2.6-Flash-MXFP4.gguf --mtp --vision MiMo-V2.6-Flash-Vision-F32.gguf

--mtp drafts with the MTP blocks inside the main file and is the faster option; --mtp-model MiMo-V2.6-Flash-DFlash-Q8_0.gguf uses the DFlash sidecar instead. Both verify against the target, so temperature-zero output follows plain decoding. The main file needs a 192 GB or larger Mac. See docs/MIMO_V26.md.

Conversion

Written by gguf-tools/mimo26_quantize.py and gguf-tools/mimo26_vision.py from XiaomiMiMo/MiMo-V2.6-Flash-RL at revision 3b38d063180c3e4aed9691fdc735f3d10b266ee4. The converter de-interleaves the tensor-parallel chunks of the fused QKV projection and keeps the released MXFP4 expert blocks bit for bit; the source revision is recorded in the GGUF metadata.

Quality

Scored on 100 official continuations from the Xiaomi platform with the fixture in gguf-tools/quality-testing/mimo-v2.6-flash-20260922; the reference scores are in the repository's QA_BEFORE_RELEASES.md. The vision encoder reproduces the checkpoint's tower on identical inputs.

The original checkpoint is released by Xiaomi under the MIT license, which applies to these files as well.

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