Model Spend Arena2ND ED.
397B · dense · 2026-10-10

Qwen3.5 397B A17B

Runs on Multi-GPU · Hugging Face ↗

vLLMSGLang

AA coding index 48.2 (Artificial Analysis, frozen since 2026-09-11)

A 397B-total MoE (~17B active) — strong quality, data-centre footprint.

Sizes on disk

Real GGUF file sizes = weight VRAM. Add the KV cache for your context (≈2 GB at 32K, fp16). Read from the GGUF header and checked against what llama.cpp actually allocates.

QuantizationSize
IQ1_M106.8 GB
IQ2_XXS114.9 GB
IQ2_M123.1 GB
IQ3_XXS140.3 GB
IQ3_S146.4 GB
Q3_K_S164.3 GB
Q3_K_M177.4 GB
Q3_K_XL178.7 GB
IQ4_XS189.7 GB
IQ4_NL193.8 GB
Q4_K_S228.0 GB
MXFP4237.4 GB
Q4_K_M244.1 GB
Q4_K_XL245.3 GB
Q5_K_S276.6 GB
Q5_K_M293.7 GB
Q5_K_XL294.9 GB
Q6_K326.6 GB
Q6_K_XL362.3 GB
Q8_0421.5 GB
Q8_K_XL427.7 GB
BF16793.0 GB

Config tips

~260 GB at Q4, multi-GPU tensor-parallel. The ~17B active params make decoding faster than the total size implies, but all experts must be resident.