Qwen3.8-Flash-Next Q4_0-Q8_0-out v3 (GGUF)

⚠️ Runtime Compatibility Notice

This is a qwen4exp architecture GGUF (Gated-DeltaNet hybrid + 512-expert routed MoE + MTP). Stock llama.cpp does not support this architecture. Use a qwen4exp-enabled llama.cpp build (e.g. the unslothai/llama.cpp fork with qwen4exp support) with --mtp-draft for speculative decoding.

Overview

Quantized GGUF build of Qwen3.8 Flash Next (general.size_label: 512x56B), the 48-layer Qwen4exp hybrid MoE (24 heads, 2 KV heads, GDN recurrent layers with full attention every 4 layers, 512 experts / 10 active, ngram-PLE layer, built-in MTP heads), 262,144-token native context.

  • Quantization: Q4_0 weights with Q8_0 output/embedding tensors (-Q8out v3 recipe), imatrix-calibrated (Qwen3.8-Flash-Next-calibration-v6, 926 entries / 582 chunks)
  • Shards: 3 (-00001-of-00003.gguf … -00003-of-00003.gguf), 96 GiB total
  • MTP: Multi-Token Prediction heads included for speculative decoding (7 proposal tokens)
  • Vision: vision projector tensors included (image-text-to-text capable)

Files

File Size
Qwen3.8-Flash-Next-Q4_0-Q8out-v3-00001-of-00003.gguf 37.7 GiB
Qwen3.8-Flash-Next-Q4_0-Q8out-v3-00002-of-00003.gguf 37.8 GiB
Qwen3.8-Flash-Next-Q4_0-Q8out-v3-00003-of-00003.gguf 20.0 GiB

Download all three shards into the same directory, then load shard 1.

Usage (qwen4exp-enabled llama.cpp)

llama-server -m Qwen3.8-Flash-Next-Q4_0-Q8out-v3-00001-of-00003.gguf \
  --mmproj mmproj-f16.gguf -ngl 99 -c 262144 --port 8080

Built and benchmarked locally on Apple M5 Pro (64 GB unified memory) with the Slipstream streaming-MoE llama.cpp fork.

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