Qwen 3.8 Flash Next - MTP Draft Speculative Model (GGUF)

This repository provides working MTP (Multi-Token Prediction) draft models in GGUF format for Qwen 3.8 Flash Next (and experimental architectures with hyper-connections / QSA / Hadamard KV rotations), powered by cafe-llama.cpp.

Compatible Engine

This MTP model requires the fork implementation supporting hyper-connection hidden states, QSA Hadamard KV rotation, and MTP layer graph generation:

Available Files

  • mtp-Qwen3.8-Flash-Next-Q4_K_M.gguf: Quantized Q4_K_M MTP draft model (~2.65 GB) - Recommended
  • mtp-Qwen3.8-Flash-Next-Q6_K.gguf: Quantized Q6_K MTP draft model (~3.24 GB)
  • mtp-Qwen3.8-Flash-Next-Q8_0.gguf: Quantized Q8_0 MTP draft model (~3.94 GB)
  • mtp-Qwen3.8-Flash-Next-BF16.gguf: Full precision BF16 MTP draft model (~7.40 GB)

Usage with llama.cpp / llama-server

Run llama-server or llama-cli with --spec-type draft-mtp and point -md to your preferred MTP file. Setting --spec-draft-n-max 2 provides optimal acceptance rate (~50-70%) for a 1-layer MTP draft head:

llama-server   -m Qwen3.8-Flash-Next-UD-IQ3_XXS-00001-of-00003.gguf   -md mtp-Qwen3.8-Flash-Next-Q4_K_M.gguf   --spec-type draft-mtp   --spec-draft-n-max 2   -ngl 999   -hmoe   -fa on   -ctk q8_0 -ctv q8_0 -kvu   -c 8192 -b 1024 -ub 128

CLI Example:

llama-cli   -m Qwen3.8-Flash-Next-UD-IQ3_XXS-00001-of-00003.gguf   -md mtp-Qwen3.8-Flash-Next-Q4_K_M.gguf   --spec-type draft-mtp   --spec-draft-n-max 2   -ngl 999   -hmoe   -fa on   -ctk q8_0 -ctv q8_0   -p "Explain quantum entanglement simply."
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GGUF
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