This repo contains specialized MoE-quants for zai-org/GLM-5.3-Flash-BF16. 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_0 745.77 GiB (8.50 BPW) Q8_0 2.674779 ± 0.013836 +0.0174% 0.013080 ± 0.000123
Q5_K_M 523.07 GiB (5.96 BPW) Q8_0 / Q5_K / Q5_K / Q6_K 2.680808 ± 0.013885 +0.2428% 0.020301 ± 0.000174
Q4_K_M 436.94 GiB (4.98 BPW) Q8_0 / Q4_K / Q4_K / Q5_K 2.699454 ± 0.013914 +0.9400% 0.037094 ± 0.000294
IQ4_XS 342.01 GiB (3.90 BPW) Q8_0 / IQ3_S / IQ3_S / IQ4_XS 2.841042 ± 0.014851 +6.2344% 0.101583 ± 0.000741
IQ3_S 265.93 GiB (3.03 BPW) Q6_K / IQ2_S / IQ2_S / IQ3_S 3.257199 ± 0.017856 +21.7956% 0.275247 ± 0.001717
IQ2_S 241.32 GiB (2.75 BPW) Q6_K / IQ2_XS / IQ2_XS / IQ3_XXS 3.512105 ± 0.019532 +31.3273% 0.374183 ± 0.002137

kld_graph ppl_graph

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