---
license: apache-2.0
base_model: Qwen/Qwen3.5-122B-A10B
tags:
  - gguf
  - quantized
  - apex
  - moe
  - mixture-of-experts
  - qwen3.5
---





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# Qwen3.5-122B-A10B APEX GGUF

**APEX (Adaptive Precision for EXpert Models)** quantizations of [Qwen3.5-122B-A10B](https://huggingface.co/Qwen/Qwen3.5-122B-A10B).

**Brought to you by the [LocalAI](https://github.com/mudler/LocalAI) team** | [APEX Project](https://github.com/mudler/apex-quant) | [Technical Report](https://github.com/mudler/apex-quant/blob/main/paper/APEX_Technical_Report.pdf)

## Benchmark Results

All measurements on 8xRTX PRO 6000 Blackwell (768 GB VRAM). Perplexity on wikitext-2-raw, context 512. Accuracy benchmarks via llama.cpp (400 tasks each).

| Configuration | Size (GB) | Perplexity | KL mean | HellaSwag | Winogrande | MMLU | ARC | tg128 (t/s) |
|---------------|-----------|-----------|---------|-----------|------------|------|-----|-------------|
| Q8_0 (Unsloth) | 121 | 4.819 | 0.004 | 85.5% | 77.3% | 44.19 | 57.19 | 85.5 |
| Q5_K_S (Unsloth) | ~81 | 4.826 | 0.007 | 85.3% | 76.0% | 43.80 | 57.86 | 90.4 |
| UD-Q4_K_XL (Unsloth) | ~72 | 4.829 | 0.010 | 84.8% | 76.3% | 44.25 | 55.85 | 91.8 |
| **APEX I-Balanced** | **83.4** | **4.831** | **0.008** | **85.5%** | **77.8%** | 43.86 | **57.86** | **96.7** |
| **APEX I-Quality** | **72.3** | **4.838** | 0.012 | 85.3% | 77.3% | 43.86 | 56.86 | **99.7** |
| APEX Quality | 72.3 | 4.848 | 0.013 | **85.5%** | 76.3% | **44.44** | 55.52 | 99.8 |
| APEX Balanced | 83.4 | 4.840 | 0.008 | 85.0% | 76.3% | 43.93 | 56.86 | 96.7 |
| **APEX I-Compact** | **55.1** | **4.978** | 0.041 | 84.5% | 77.5% | **44.06** | **57.86** | **106.3** |
| APEX Compact | 55.1 | 5.046 | 0.049 | 84.5% | **77.8%** | 43.54 | 56.19 | 106.2 |
| **APEX I-Mini** | **44.9** | **5.306** | 0.102 | 84.0% | 75.3% | 42.83 | 56.52 | **110.0** |

### Highlights

- **APEX I-Balanced matches or beats Q8_0** on HellaSwag (85.5%), Winogrande (77.8% vs 77.3%), and ARC (57.86 vs 57.19) while being **31% smaller** and **13% faster**.
- **APEX I-Quality (72.3 GB)** beats UD-Q4_K_XL at the same size on HellaSwag (85.3% vs 84.8%), Winogrande (77.3% vs 76.3%), and ARC (56.86 vs 55.85).
- **APEX I-Compact (55.1 GB)** achieves 84.5% HellaSwag and 57.86 ARC at **55% less size than Q8_0** — fastest standard profile at 106 t/s.
- **APEX I-Mini (44.9 GB)** is the smallest at **63% less size than Q8_0**, still 84% HellaSwag, fastest at 110 t/s.
- I-variants consistently improve over standard profiles across PPL, KL, and ARC.

## Available Files

| File | Profile | Size | Best For |
|------|---------|------|----------|
| Qwen3.5-122B-A10B-APEX-I-Balanced.gguf | I-Balanced | 83.4 GB | Best overall -- matches Q8_0 quality at 31% less size |
| Qwen3.5-122B-A10B-APEX-I-Quality.gguf | I-Quality | 72.3 GB | Best quality at ~72 GB tier |
| Qwen3.5-122B-A10B-APEX-Quality.gguf | Quality | 72.3 GB | Highest MMLU (44.44) |
| Qwen3.5-122B-A10B-APEX-Balanced.gguf | Balanced | 83.4 GB | General purpose, low KL |
| Qwen3.5-122B-A10B-APEX-I-Compact.gguf | I-Compact | 55.1 GB | Consumer multi-GPU, best quality/size ratio |
| Qwen3.5-122B-A10B-APEX-Compact.gguf | Compact | 55.1 GB | Consumer multi-GPU setups |
| Qwen3.5-122B-A10B-APEX-I-Mini.gguf | I-Mini | 44.9 GB | Smallest viable, fastest inference |

## What is APEX?

APEX is a quantization strategy for Mixture-of-Experts (MoE) models. It classifies tensors by role (routed expert, shared expert, attention) and applies a layer-wise precision gradient -- edge layers get higher precision, middle layers get more aggressive compression. I-variants use diverse imatrix calibration (chat, code, reasoning, tool-calling, agentic traces, Wikipedia).

See the [APEX project](https://github.com/mudler/apex-quant) for full details, technical report, and scripts.

## Architecture

- **Model**: Qwen3.5-122B-A10B (Qwen3.5-MoE)
- **Layers**: 48
- **Experts**: 256 routed + 1 shared (8 active per token)
- **Total Parameters**: 122B
- **Active Parameters**: ~10B per token
- **APEX Config**: 5+5 symmetric edge gradient across 48 layers

## Run with LocalAI

```bash
local-ai run mudler/Qwen3.5-122B-A10B-APEX-GGUF@Qwen3.5-122B-A10B-APEX-I-Balanced.gguf
```

## Credits

APEX is brought to you by the [LocalAI](https://github.com/mudler/LocalAI) team. Developed through human-driven, AI-assisted research. Built on [llama.cpp](https://github.com/ggerganov/llama.cpp).