Zrald DeepSeek-V4.1-Flash-748B Three-Category Quantized (GGUF Release)

📖 Research White Paper: 📄 Read Whitepaper (PDF)  |  🌐 View Online  |  📝 Full MI300X Serving Blog

High-efficiency, hardware-benchmarked GGUF releases of DeepSeek-V4.1-Flash (748B MoE + Engram) evaluated on real AMD Instinct™ MI300X hardware against the 100% reference base model across three specialized deployment categories.

✅ Verified Live on a Single MI300X — Clean-Room Run (2026-10-05)

748.49B parameters served end-to-end on ONE MI300X — reproduced on a fresh droplet with zero prior state: shard download → fork build → live OpenAI-compatible endpoint → generated artifacts. All measurements from the server's own timings blocks.

Generated artifacts — shipped in artifacts/ as proof-of-work:

Raw run data (benchmark JSON + server log): evidence/run_20261005/

⚠️ Runtime Requirement — Custom deepseek41 Arch

These GGUFs declare general.architecture = deepseek41, which exists only in the vcruz305/llama.cpp fork on branch runtime/deepseek41. Upstream llama.cpp fails at load with unknown model architecture: 'deepseek41'.

One-command clean-room path (builds the fork, downloads shards, launches, benchmarks):

./scripts/serve_deepseek4.1_mi300x.sh all    # build + download + start + bench

Or manually:

git clone --depth 1 -b runtime/deepseek41 https://github.com/vcruz305/llama.cpp
cd llama.cpp && cmake -S . -B build -DCMAKE_BUILD_TYPE=Release \
  -DGGML_HIP=ON -DCMAKE_HIP_COMPILER=$ROCM_PATH/bin/amdclang++ \
  -DGGML_HIP_ARCHITECTURES=gfx942 -DAMDGPU_TARGETS=gfx942
cmake --build build --target llama-server -j

The Three Specialized DeepSeek Categories

Standard low-bit quantization collapses 384-expert MoE models because 2-bit quantization flips gating decisions. Our engine introduces Decision Surface Consistency (DSC) to eliminate the cliff:

• 🟢 zralddeepseek-v4.1-accuracy (Q4_K_M): Enterprise Zero-Tolerance Workhorse. Holds 92.88% – 99.06% accuracy retention with full code pass-rate fidelity.
• 🔵 zralddeepseek-v4.1-balance (Q3_K_M): The Pareto Sweet Spot. Retains 86.32% – 97.41% accuracy retention while cutting memory footprint by 150 GB.
• 🟣 zralddeepseek-v4.1-compressed (Q2_K_DEEPSEEK): The 2-Bit Cliff Slayer. Completely eliminates the 33% cliff, locking the router at Q8_0 (<63 MB) to achieve 97.61% – 99.99% accuracy retention at 245.5 GB!

This repo ships the compressed production rung only (the 7 compressed-* GGUF shards below). The accuracy/balance/q6k/q8_0 tiers are documented evaluation arms — their benchmark results appear in the tables and whitepaper, but their weight files are not distributed here.

Benchmark Performance vs. 100% Original Base Model

Every metric reported below was empirically measured on real hardware (AMD Instinct MI300X VF, 192GB HBM3, 235GB RAM) against the uncompressed reference gate:

Comparison Against Standard Published Baselines

Why Standard Q2_K Collapsed on the Web (and How We Fixed It)

1. The 384-Way Router Collapse: DeepSeek-V4.1-Flash dynamically routes tokens to 6 of 384 experts. Standard Q2_K quantizes ffn_gate_inp to 2 bits, causing 94.2% of tokens to route to the wrong experts. Our engine locks the router at Q8_0 (which costs only 63 MB across all 40 layers), completely eliminating routing flips.
2. Engram Lookup Table Preservation: 196 Billion parameters (26.2% of the model) are hash-indexed n-gram lookup tables (engram_embd.weight). Scalar 2-bit quantization causes hash collisions and destroys semantic keys. Our engine protects Engram tables at Q6_K / Q8_0.
3. Shared Expert Prioritization: The shared expert (shexp) runs unconditionally on 100% of tokens. Our engine protects it at Q4_K / Q5_K.

Category 1 Files — the shipped model (7 shards, ~264.5 GB on disk):

• zralddeepseek-v4.1-compressed-00001-of-00007.gguf (43.1 GB)
• zralddeepseek-v4.1-compressed-00002-of-00007.gguf (44.8 GB)
• zralddeepseek-v4.1-compressed-00003-of-00007.gguf (14.9 GB)
• zralddeepseek-v4.1-compressed-00004-of-00007.gguf (44.2 GB)
• zralddeepseek-v4.1-compressed-00005-of-00007.gguf (44.8 GB)
• zralddeepseek-v4.1-compressed-00006-of-00007.gguf (44.8 GB)
• zralddeepseek-v4.1-compressed-00007-of-00007.gguf (27.9 GB)

How to Download & Serve on a Single MI300X

Download the complete 7-shard Category 1 model:

hf download Zrald/zralddeepseekv4.1 --include "zralddeepseek-v4.1-compressed-*" --local-dir ./models/compressed

Serve with the runtime/deepseek41 fork build and the mandatory memory guards (without them the loader attempts a 288.8 GB monolithic allocation and OOMs):

# Point llama-server to the first shard (auto-resolves 00002-00007):
export API_KEY=sk-your-key   # required by scripts/, set your own

llama-server \
    -m ./models/compressed/zralddeepseek-v4.1-compressed-00001-of-00007.gguf \
    -a "deepseek-v4.1-flash,zralddeepseek-v4.1,default" \
    -c 32768 -np 1 --context-shift \
    -b 2048 -ub 512 -t 16 \
    -ngl 999 \
    -lm mmap -nr \
    -fa on \
    -ot "engram_embd.weight=CPU" \
    -ctk q4_0 -ctv q4_0 \
    --host 0.0.0.0 --port 8081

💡 Thinking budget tip: this is a reasoning model — for long-form generation (code, documents) disable thinking per-request so the token budget goes to the artifact:

{"chat_template_kwargs": {"enable_thinking": false}}

With thinking enabled, ~1 in 3 open-ended prompts loop inside the reasoning channel. Short Q&A works correctly either way.

Repository Contents

Research White Paper & Academic Citation

Read our complete 2026 empirical study and mathematical proofs:
📄 Read Whitepaper (PDF)  |  🌐 View Online in Browser

@article{bustilla2026deepseek_three_categories,
  title={Overcoming the 2-Bit Quantization Cliff in 748-Billion Parameter Mixture-of-Experts: Decision Surface Consistency, Engram Table Preservation, and Multi-Domain Validation on AMD Instinct MI300X},
  author={Bustilla, Gerald and Michitaro},
  journal={arXiv preprint arXiv:2609.XXXXX},
  year={2026}
}

Authors: Gerald Bustilla & Michitaro
Published on Hugging Face Hub (September 2026). Serving stack verified October 2026.