Qwen3.6-35B-A3B-MTP APEX-I-NanoPlus GGUF

The Next-Generation Frontier MoE · Extreme 13GB Footprint · Fast System RAM Streaming & Massive Context on 16GB VRAM

THE DEFINITIVE SPECIFICATION IN THE ~13 GB CEILING

This APEX-I-NanoPlus release marks the official debut of our specialized tensor-by-tensor architectural configuration for sparse Mixture-of-Experts quantization within an extreme ~13 GB envelope. Its 40 layers and 256 micro-experts are allocated tensor by tensor to maximize reasoning precision, preserve routing behavior, and prevent avoidable CPU dequantization stalls during hybrid and system-RAM inference; optional MTP companion files remain available for speculative decoding.

🏆 EMPIRICAL BENCHMARK & QUALITY COMPARISON

Quantization Specification File Size (Disk) Memory Footprint (RAM/VRAM) Average BPW WikiText-2 Perplexity Quality Tier Equivalent
Unquantized BF16 Base ~71.05 GB ~66.18 GiB 16.00 BPW ~5.32 Full Precision Baseline
APEX-I-MiniPlus V2.1 15.23 GB 14.18 GiB 3.43 BPW 5.3693 ± 0.12528 (+0.0493 / +0.93%) Q5_K_L tier (bordering Q6_K)
APEX-I-NanoPlus (NEW) 13.03 GB 12.14 GiB 2.93 BPW 5.5244 ± 0.12916 (+0.2044 / +3.84%) Solid Q4_K_M / Q4_K_L Tier
Generic Community IQ2_S ~12.2 GB ~11.4 GiB 2.56 BPW > 5.85 (Degraded) Unstable / Syntax Spikes

Looking for higher precision? APEX-I-MiniPlus V2.1 offers the full 15.23 GB (3.43 BPW) release of this Qwen3.6 family, delivering Q5_K_L tier (bordering Q6_K) fidelity with integrated MTP support.

ARC-Challenge (0-shot, 1,172 questions): ~95.75%.

  • Q4_K_L Tier in Reasoning & Routing: 100% uncompressed F32 routers (gate_inp) and a Q6_K output head eliminate router drift, matching or exceeding standard Q4_K_L baselines on logic benchmarks.
  • Solid Q4_K_M Tier in Language Modeling: WikiText-2 perplexity preserves 4-bit distributional fidelity across standard generation in an agile ~13.03 GB footprint.

Routing: all recipe-designated gate_inp and gate_shexp tensors remain in uncompressed F32, preserving zero routing drift.

DO NOT CONFUSE APEX-I-NANOPLUS WITH GENERIC COMMUNITY SUB-3-BIT QUANTS!

Regardless of release version, NEVER confuse handcrafted APEX-I-NanoPlus builds with generic community sub-3-bit releases:

  • Generic Community IQ2_S / IQ2_XXS: Uniformly crushes all core MoE experts down to aggressive 2-bit codebooks without importance calibration, leaves the sensitive token output head unarmored at 3-bit, and compresses attention projections. In deep reasoning models, this triggers severe perplexity spikes, syntax errors, and broken code brackets.
  • Handcrafted APEX-I-NanoPlus: Applies a surgical tensor-by-tensor architecture that preserves 100% of expert routing matrices in uncompressed F32 (zero router drift), armors the token output head in high-precision Q6_K, safeguards attention gates in Q8_0, fortifies the critical MoE down-projection residual stream (ffn_down_exps) in IQ3_XXS (3.06 bpw), and restricts 2-bit compression strictly to redundant gating/up projections guided by the official imatrix.

SYSTEM RAM INFERENCE: FULL OR PARTIAL

This APEX-I-NanoPlus release is designed for full or partial system-RAM inference. Depending on the processor, memory bandwidth, and DDR4/DDR5 configuration, generation can range from 20 to 45 tok/s. With partial GPU offload, systems that cannot fit 128K or more context entirely in VRAM can place the remaining model and context load in system RAM, maintaining stable, responsive generation at longer context lengths.


Optimization History & Transparency Notice

We maintain our previous releases publicly as a transparent engineering record of continuous optimization. Below is the exact evolutionary roadmap of our architectures:

Specification Core Experts (2–37) Edge Experts (0–1, 38–39) Shared Expert (shexp) Full Attention (L3, 7, 11, ...) Attention Gates (30 Layers) Output Head (output.weight) Routers (gate_inp) Size / Overhead Real-World Impact
Generic APEX Mini IQ2_S (2.50 bpw) Q3_K (only 5 layers) Q4_K / Q3_K Q3_K Compressed Q3_K_M Compressed Baseline (approx. 12.5 GB) Severe syntax errors, broken code indentation, high perplexity in <think>.
MiniPlus V2.1 (Current) IQ3_XXS + Q3_K Q3_K (10 layers) Q5_K Q4_K (q/k/v) + Q6_K (output) Q8_0 Q6_K F32 15.23 GB (14.18 GiB) Maximum fidelity near-lossless Q5/Q6 tier. Fits 24GB GPUs effortlessly.
NanoPlus (NEW) IQ3_XXS (down) + IQ2_S (gate) + IQ2_XXS (up) Q3_K (down) + IQ3_XXS (gate/up) Q4_K Q4_K (q/k/v) + Q6_K (output) Q8_0 Q6_K F32 13.03 GB (12.14 GiB) Calibrated ~13.0 GB tier. Leaves >3 GB free VRAM on 16GB cards for 32k context with zero AVX2 CPU stalls.

Deployment & System Architecture Guide

  • Full GPU VRAM Offload (16GB+ VRAM, -ngl 99): Effortless full offload with native 32K–64K context support on 16GB cards (RTX 4080 / RTX 4070 Ti Super), and native 256K context on 24GB workstations (RTX 3090 / 4090 / 5090).
  • System RAM Streaming Specialist (DDR4/DDR5 & Massive Context): Specially engineered to run either partially or entirely out of system RAM across large or full context windows. By utilizing linear SIMD-optimized Q4_K attention projections and preserving critical down-projections in IQ3_XXS, AVX2 CPU dequantization stalls are eliminated. Depending on your processor architecture and memory bandwidth (dual-channel DDR4 or high-speed DDR5 6000+ MT/s), streaming generation in system RAM can approach speeds remarkably close to full VRAM execution.

Explore our official collection: APEX-I-NanoPlus Collection.


Quick Navigation Index

EXPLORE THE ESTABLISHED 35B MoE MINIPLUS LINEUP

These are complementary APEX-I-MiniPlus V2.1 releases, not alternate downloads of the same model. Each receives the same tensor-by-tensor approach, integrated MTP where supported, and a design suitable for full or partial system-RAM inference. Choose the model whose native strengths best fit the work you want to do:

  • Qwen3.6-35B-A3B MTP APEX-I-MiniPlus-V2.1 — a versatile frontier MoE for broad reasoning, multilingual work, agents, tool use, and multimodal tasks.
    • Best for: General reasoning, agent workflows, tool calling, and flexible multimodal use.
  • Qwen3.6-35B-A3B MTP APEX-I-MiniPlus-V2.1 Abliterated — the V2.1 refusal-ablated Qwen3.6 edition for users who deliberately prefer reduced refusal behavior.
    • Best for: Workflows where an abliterated Qwen3.6 variant is explicitly desired.
  • Ornith 1.5 APEX-I-MiniPlus-V2.1 — a software-engineering-focused MoE designed for repository-scale coding and autonomous engineering agents.
    • Best for: Repository-scale development, multi-file code changes, and software-engineering agents.
  • Tiel Coder APEX-I-MiniPlus-V2.1 — a specialist coding MoE tuned for agentic programming, iterative tool use, and implementation-heavy work.
    • Best for: Focused coding sessions, iterative debugging, and tool-driven implementation.

These remain distinct model families and editions with their own behavior and empirical results. Pick by workload and intended alignment behavior rather than treating them as interchangeable quantization variants.


🏅 Independent Benchmark of the APEX-I-MiniPlus Family (Occamy V2 Reference)

External report: zephel01 independently benchmarked Occamy V2. The benchmark was performed on Occamy-1.0 APEX-I-MiniPlus V2, not on this specific NanoPlus release. It is included as independent context for the broader tensor-by-tensor MiniPlus approach.

The related APEX-I-MiniPlus quantization architecture has an independent evaluation by Japanese AI researcher and evaluator zephel01 (CoolZero) on an NVIDIA RTX 5090 (32GB) workstation running llama.cpp CUDA with FlashAttention.

The evaluation covered 348 unseeded trials on SWE-bench-style multi-file Python bug-fixing tasks with hidden pytest suites (llmbench):

  • L6 Multi-File Code Generation (60 tasks):
    • 32K context: 93.3% resolved (46/60 tasks passed 5/5 consecutive trials).
    • 65K context: 90.0% resolved (45/60 tasks passed 5/5 consecutive trials).
  • Context scaling on the tested Occamy V2 build: 14.6 GB at 32K and 15.1 GB at 65K.

These findings belong to Occamy V2 and should not be read as a direct NanoPlus benchmark. NanoPlus-specific fidelity is documented by its own WikiText-2 result below.

Empirical Benchmarks & Fidelity Verification

The comparison table near the top consolidates the model-specific BF16 baseline, final GGUF PPL, delta, published main-file size, BPW, and fidelity tier. The routing treatment is preserved in the note directly beneath it.

Quality Spectrum: APEX-I-NanoPlus vs. Standard Flat Quantizations

How the handcrafted APEX-I-NanoPlus architecture compares against standard flat quantizations in llama.cpp on 35B Mixture-of-Experts architectures:

Quantization Format Bits Per Weight (BPW) Model Footprint (Disk / VRAM) Perplexity Delta (vs. FP16 Baseline) Token Fidelity & Syntactic Stability Tier
FP16 / BF16 (Uncompressed) 16.0 bpw 71.0 GB 0.00 (Reference) 100% full uncompressed reference fidelity.
Standard Q8_0 8.50 bpw approx. 38 GB approx. +0.01 Virtually lossless; excessive memory overhead for consumer hardware.
Standard Q6_K 6.56 bpw approx. 30 GB approx. +0.02 to +0.05 Near-lossless FP16 fidelity; requires multi-GPU or 32GB+ VRAM setups.
APEX-I-MiniPlus V2.1 3.43 bpw 15.23 GB (14.18 GiB) +0.0493 (PPL: 5.3693) Near-lossless Q5_K / Q6_K tier. Full native 256K context on 24GB workstations.
🏆 APEX-I-NanoPlus (IsValorum) 2.93 bpw 13.03 GB (12.14 GiB) +0.2044 (PPL: 5.5244 ± 0.12916) Solid Q4_K_M fidelity tier at only 13.0 GB (81.6% weight reduction). Enables 32k context 100% in VRAM on 16GB GPUs.
Standard Q4_K_M 4.50 bpw approx. 20.0 GB approx. +0.15 to +0.25 Standard industry trade-off; cannot fit in 16GB VRAM.
Standard Q3_K_M 3.44 bpw 16.6 GB approx. +0.36 to +0.45 Noticeable syntax drop, bracket corruption, and tokenizer classification noise.
Standard IQ2_S / Generic APEX Mini 2.50 bpw approx. 12.2 GB approx. +0.55 to +1.50+ Severe reasoning breakdown, high perplexity spikes in <think> chains.

Model Files & Technical Specifications

File Name File Size Memory Footprint BPW Description
Qwen3.6-35B-A3B.APEX-I-NanoPlus.gguf 13.03 GB (12.14 GiB) 12.14 GiB 2.93 BPW Core agentic reasoning & multimodal MoE in APEX-I-NanoPlus
mmproj-Q8_0.gguf 610.66 MB (582.37 MiB) 582.37 MiB 8.50 BPW Dedicated Q8_0 multimodal vision projector for document & image reasoning
mtp-Qwen3.6-35B-A3B-Q8_0.gguf 1.99 GB (1.85 GiB) 1.85 GiB 8.50 BPW Dedicated Q8_0 Multi-Token Prediction (MTP) draft head for speculative decoding
mtp-Qwen3.6-35B-A3B-Q4_0.gguf 1.19 GB (1.11 GiB) 1.11 GiB 4.50 BPW Dedicated Q4_0 Multi-Token Prediction (MTP) draft head for low-VRAM speculative decoding
Complete download 14.83 GB (13.81 GiB) 13.81 GiB — Main GGUF plus the Q4_0 MTP companion and bundled vision projector
  • Base Model: Qwen/Qwen3.6-35B-A3B
  • Parameters: 35.2B total (approx. 2.6B to 3.2B active per token)
  • Architecture: 40 layers, 256 micro-experts (8 active per token) + hybrid linear attention / DeltaNet recurrent layers; separate MTP companion heads are available for speculative decoding
  • Context Length: 262,144 tokens (native 256K)

Surgical Tensor Quantization Map (Audited from GGUF)

The exact tensor breakdown below has been verified directly from the compiled binary weights:

Layer Group Sub-Component / Tensor Qty Precision Engineering Rationale
Global Output Head output.weight 1 Q6_K Preserves near-FP16 token classification; eliminates syntax errors, bracket drops, and hallucinations.
Global Embeddings token_embd.weight 1 Q4_K High-fidelity vocabulary embedding representation.
All Normalizations output_norm, attn_*_norm, ssm_norm 171 F32 100% uncompressed numerical stability across all 40 layers.
Expert Routers blk.*.ffn_gate_inp, ffn_gate_inp_shexp 82 F32 100% uncompressed routing fidelity across 256 micro-experts; zero router drift.
Attention Gates blk.*.attn_gate.weight (Hybrid Layers) 31 Q8_0 High-precision attention gating across hybrid DeltaNet recurrence layers; eliminates crosstalk.
Shared Foundation Experts blk.*.ffn_{gate,down,up}_shexp (All Layers) 123 Q4_K Foundation knowledge backbone active on 100% of tokens; protected in linear Q4_K for fast streaming.
Periodic Full Attention blk.{3,7,11,...}.attn_q/k/v (10 Anchor Layers) 30 Q4_K Full quadratic attention anchor checkpoints for deep needle-in-a-haystack retrieval.
Periodic Full Attention blk.{3,7,11,...}.attn_output (10 Anchor Layers) 10 Q6_K Armored attention output projection over deep context.
Recurrent SSM Scales blk.*.ssm_alpha, ssm_a, ssm_conv1d, ssm_dt 123 F32 Guarded in uncompressed FP32 to prevent DeltaNet recurrent state drift.
Linear Attention & SSM blk.*.attn_qkv, ssm_beta, ssm_out 92 Q4_K Linear AVX2 execution; zero SIMD CPU stalls during system RAM streaming.
Border MoE Down-Proj Layers 0–1 & 38–39 (ffn_down_exps) 4 Q3_K Linear SIMD execution optimized for token entry and exit stability.
Border MoE Gate/Up Layers 0–1 & 38–39 (ffn_gate/up_exps) 8 IQ3_XXS High-density boundary protection guided by imatrix.
Core MoE Down-Proj Layers 2–37 (ffn_down_exps) 36 IQ3_XXS Fortified 3.06 bpw residual stream; preserves core mathematical and reasoning capacity.
Core MoE Gating Layers 2–37 (ffn_gate_exps) 36 IQ2_S High-precision 2.50 bpw SwiGLU gating; eliminates activation noise.
Core MoE Up-Proj Layers 2–15 (ffn_up_exps) 14 IQ2_S Enhanced 2.50 bpw precision for sensitive early-intermediate feature extraction.
Core MoE Up-Proj Layers 16–37 (ffn_up_exps) 22 IQ2_XXS Extreme 2.06 bpw compression in deep MoE layers to reach exact 13.0 GB envelope.
MTP Companion Head mtp-Qwen3.6-35B-A3B-Q4_0.gguf 1 Q4_0 Separate low-VRAM speculative draft companion; use with -md.

Hardware Throughput & Offload Benchmarks (RTX 30 / 40 / 50 & RAM Streaming)

Hardware guidance for compatible llama.cpp-style runtimes:

Hardware Target Offload Mode Generation Speed (Est.) Prompt Prefill Speed (Est.) Highlights
NVIDIA RTX 5080 / 5090 (Blackwell) Full GPU (-ngl 99) approx. 247 – 251 tok/s 2,800 – 3,900+ tok/s Ultra-high throughput on Blackwell architecture; native 256k window in VRAM
NVIDIA RTX 4090 (24GB GDDR6X) Full GPU (-ngl 99) 95 – 120+ tok/s 2,000 – 2,800+ tok/s Linear attention layers slash prefill latency; 256k window in VRAM
NVIDIA RTX 4080 (16GB GDDR6X) Full GPU (-ngl 99) 75 – 92+ tok/s 1,600 – 2,200+ tok/s Entire model fits in VRAM with room for 32k context!
NVIDIA RTX 3090 (24GB GDDR6) Full GPU (-ngl 99) 75 – 90+ tok/s 1,500 – 2,000+ tok/s Full 256k native window in VRAM
Workstation / Laptop (DDR4 / DDR5 RAM) Hybrid Offload (Few layers in VRAM) Hardware-dependent Hardware-dependent Zero AVX2 CPU stalls; efficient streaming from system RAM
  • Aggressive Hybrid Offload Profile: Hybrid offload supports reasoning-enabled generation with limited VRAM while the remaining model weights stream from system RAM.

Empirical Testbed Architecture & Desktop/Server Scaling

  • Empirical Benchmark Hardware: The hybrid offload and system RAM streaming behavior documented above was measured on a consumer laptop powered by an Intel 12th Gen Alder Lake architecture featuring a hybrid design of Performance Cores (P-Cores) and Efficient Cores (E-Cores) paired with dual-channel system RAM and constrained laptop power/thermal envelopes.
  • Thread Scheduling & E-Core Contention: In hybrid architectures like Alder Lake, OS thread scheduling across background E-Cores and lower single-core mobile power limits introduce memory bandwidth and thread synchronization overhead during CPU dequantization.
  • Dramatic Scaling on Higher-End Processors: When running on desktop or server processors (such as modern AMD Ryzen 7000 / 9000 Zen 4/5 series or high-TDP Intel desktop platforms with dedicated performance cores, large L3 caches, and high-bandwidth dual- or quad-channel DDR5 running at 6000+ MT/s), streaming generation speeds and prefill throughput will scale dramatically higher, substantially exceeding these measured mobile numbers.

The 16GB & 24GB Advantage: Massive Context in VRAM!

Qwen3.6-35B-A3B APEX-I-NanoPlus fits native context on 16GB GPUs and the full 256K window on 24GB GPUs:

Context Length Model Weights (Est.) KV Cache (q8_0, 4 slots) Compute Buffers Total GPU VRAM (Est.) Feasibility
32,768 (32k) 12.14 GiB 0.58 GiB 1.80 GiB 14.52 GiB FULL OFFLOAD ON 16GB GPUs (RTX 4080 / 4070 Ti Super)!
65,536 (64k) 12.14 GiB 0.92 GiB 1.95 GiB 15.01 GiB FULL OFFLOAD ON 16GB GPUs!
131,072 (128k) 12.14 GiB 1.58 GiB 2.22 GiB 15.94 GiB Full offload on 24GB; tight fit on 16GB
262,144 (256k) 12.14 GiB 2.92 GiB 2.80 GiB 17.86 GiB FULL 256K NATIVE IN 24GB VRAM!

Note: Leaves comfortable headroom for display drivers and compute buffers on standard 16GB and 24GB GPUs.

💡 16GB GPU Verification (Single Stream / Desktop)

Single-stream desktop inference with FlashAttention consumes approx. 14.5 GB at 32,768 ctx and approx. 15.0 GB at 65,536 ctx (-ctk q8_0 -ctv q8_0 -fa on). This confirms that 32K to 64K context runs completely in VRAM on 16GB cards (RTX 4080 / RTX 4070 Ti Super / RTX 5080) without system RAM offload!


Recommended Configuration & Setup

1. llama-cli with MTP Speculative Decoding & Vision Projector

llama-cli \
  -m Qwen3.6-35B-A3B.APEX-I-NanoPlus.gguf \
  -md mtp-Qwen3.6-35B-A3B-Q4_0.gguf \
  --mmproj mmproj-Q8_0.gguf \
  -ngl 99 \
  -c 32768 \
  --temp 0.6 \
  -p "Explain the implementation of a thread-safe LRU cache in Rust."

2. High-Performance OpenAI-Compatible Server

llama-server.exe \
  -m Qwen3.6-35B-A3B.APEX-I-NanoPlus.gguf \
  -md mtp-Qwen3.6-35B-A3B-Q4_0.gguf \
  --mmproj mmproj-Q8_0.gguf \
  -ngl 99 \
  --port 8080 \
  --parallel 4 \
  --flash-attn on \
  --fit on \
  -c 65536 \
  --cache-type-k q8_0 \
  --cache-type-v q8_0

⚙️ Recommended Generation Parameters (Qwen Official)

Sampling metadata recorded from Qwen/Qwen3.6-35B-A3B in the completed build:

Hyperparameter Value Description / Creator Notice
Temperature 0.60 Recommended for reasoning and coding stability.
Top-P 0.95 Source GGUF sampling metadata.
Top-K 20 Source GGUF sampling metadata.
Max New Tokens Runtime-dependent Select for the target workload.

🔍 Model Inherent Behavior vs. Quantization Fidelity Notice

Any behavioral nuances, stylistic tendencies, domain-specific habits, or zero-shot edge-case oversights stem entirely from the original unquantized checkpoint weights and fine-tuning distribution, NOT from the APEX-I quantization process. Handcrafted APEX-I-NanoPlus strictly preserves mathematical tensor fidelity—keeping 100% of expert routing matrices (gate_inp) in uncompressed F32 (zero router drift), armoring the token output head in Q6_K, safeguarding attention gates in Q8_0, and protecting the down-projection residual stream in IQ3_XXS. Empirical verification records the final GGUF perplexity at 5.5244 ± 0.12916.

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