This repo contains specialized MoE-quants for Qwen3.5-397B-A17B. 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
Q5_K_M 273.49 GiB (5.93 BPW) Q8_0 / Q5_K / Q5_K / Q6_K 4.617400 ± 0.057235 +0.0156% 0.002553 ± 0.000078
Q4_K_M 227.55 GiB (4.93 BPW) Q8_0 / Q4_K / Q4_K / Q5_K 4.624688 ± 0.057341 +0.1735% 0.004496 ± 0.000117
IQ4_XS 176.92 GiB (3.83 BPW) Q8_0 / IQ3_S / IQ3_S / IQ4_XS 4.653226 ± 0.057738 +0.7916% 0.011963 ± 0.000309
IQ3_S 136.31 GiB (2.95 BPW) Q6_K / IQ2_S / IQ2_S / IQ3_S 4.745153 ± 0.059208 +2.7828% 0.033163 ± 0.000791

kld_graph ppl_graph

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