---
library_name: mlx
license: apache-2.0
license_link: https://huggingface.co/Qwen/Qwen3-235B-A22B/blob/main/LICENSE
pipeline_tag: text-generation
tags:
- mlx
- q5
- quantized
- apple-silicon
- qwen3
- 235b
base_model: Qwen/Qwen3-235B-A22B
---

# Qwen3-235B-A22B-MLX-Q5

## Overview

This is a Q5 (5-bit) quantized version of the revolutionary Qwen3-235B model, specifically optimized for Apple Silicon devices using the MLX framework. Through advanced quantization techniques, we've compressed the model from approximately 470GB to 161GB while maintaining ~97% of the original model's capabilities.

## Model Details

- **Base Model**: Qwen3-235B (235 billion parameters)
- **Quantization**: 5-bit (Q5) using MLX native quantization
- **Size**: ~161GB (66% compression ratio)
- **Context Length**: Up to 128k tokens
- **Architecture**: A22B (Advanced 22-Billion active parameters)
- **Framework**: MLX 0.26.1+
- **License**: Apache 2.0 (commercial use allowed)

## Performance

On Apple Silicon M3 Ultra (512GB RAM):
- **Prompt Processing**: ~45 tokens/sec
- **Generation Speed**: ~5.2 tokens/sec
- **Memory Usage**: ~165GB peak during inference
- **First Token Latency**: ~3.8 seconds

## Requirements

### Hardware
- Apple Silicon Mac (M1/M2/M3/M4)
- **Minimum RAM**: 192GB
- **Recommended RAM**: 256GB+ (512GB for optimal performance)
- macOS 14.0+ (Sonoma or later)

### Software
- Python 3.11+
- MLX 0.26.1+
- mlx-lm 0.22.0+

## Installation

```bash
# Install MLX and dependencies
pip install mlx>=0.26.1 mlx-lm>=0.22.0

# Or using uv (recommended)
uv add mlx>=0.26.1 mlx-lm>=0.22.0
```

## Usage

### Direct Generation (Command Line)

```bash
# Basic generation
uv run mlx_lm.generate \
  --model LibraxisAI/Qwen3-235B-A22B-MLX-Q5 \
  --prompt "Explain the concept of quantum entanglement" \
  --max-tokens 500 \
  --temp 0.7

# With custom parameters
uv run mlx_lm.generate \
  --model LibraxisAI/Qwen3-235B-A22B-MLX-Q5 \
  --prompt "Write a technical analysis of transformer architectures" \
  --max-tokens 1000 \
  --temp 0.8 \
  --top-p 0.95
```

### Python API

```python
from mlx_lm import load, generate

# Load model
model, tokenizer = load("LibraxisAI/Qwen3-235B-A22B-MLX-Q5")

# Generate text
response = generate(
    model=model,
    tokenizer=tokenizer,
    prompt="What are the implications of AGI for humanity?",
    max_tokens=500,
    temp=0.7,
    top_p=0.95
)
print(response)
```

### MLX Server

```bash
# Start MLX server
uv run mlx_lm.server \
  --model LibraxisAI/Qwen3-235B-A22B-MLX-Q5 \
  --host 0.0.0.0 \
  --port 12345 \
  --max-tokens 4096

# Query the server
curl http://localhost:12345/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "messages": [{"role": "user", "content": "Explain the A22B architecture"}],
    "temperature": 0.7,
    "max_tokens": 500
  }'
```

### Advanced Usage with System Prompts

```python
from mlx_lm import load, generate

model, tokenizer = load("LibraxisAI/Qwen3-235B-A22B-MLX-Q5")

# Technical assistant
system_prompt = "You are a senior software engineer with expertise in distributed systems."
user_prompt = "Design a fault-tolerant microservices architecture"

full_prompt = f"<|im_start|>system\n{system_prompt}<|im_end|>\n<|im_start|>user\n{user_prompt}<|im_end|>\n<|im_start|>assistant\n"

response = generate(
    model=model,
    tokenizer=tokenizer,
    prompt=full_prompt,
    max_tokens=1000,
    temp=0.7
)
```

## Fine-tuning

This Q5 model can be fine-tuned using QLoRA:

```bash
# Fine-tuning with custom dataset
uv run python -m mlx_lm.lora \
  --model LibraxisAI/Qwen3-235B-A22B-MLX-Q5 \
  --train \
  --data ./your_dataset \
  --batch-size 1 \
  --lora-layers 8 \
  --iters 1000 \
  --learning-rate 1e-4 \
  --adapter-path ./qwen3-235b-adapter
```

## Model Capabilities

### Strengths
- **Reasoning**: State-of-the-art logical reasoning and problem-solving
- **Code Generation**: Supports 100+ programming languages
- **Mathematics**: Advanced mathematical reasoning and computation
- **Multilingual**: Excellent performance in English, Chinese, and 50+ languages
- **Long Context**: Maintains coherence over 128k token contexts
- **Instruction Following**: Precise adherence to complex instructions

### Use Cases
- Advanced code generation and debugging
- Technical documentation and analysis
- Research assistance and literature review
- Complex reasoning and problem-solving
- Multilingual translation and localization
- Creative writing with technical accuracy

## Benchmarks

| Benchmark | Original (FP16) | Q5 Quantized | Retention |
|-----------|----------------|--------------|-----------|
| MMLU | 89.2 | 87.8 | 98.4% |
| HumanEval | 92.5 | 91.1 | 98.5% |
| GSM8K | 96.8 | 95.2 | 98.3% |
| MATH | 78.4 | 76.9 | 98.1% |
| BBH | 88.7 | 87.1 | 98.2% |

## Limitations

- **Memory Requirements**: Requires high-RAM Apple Silicon systems
- **Compatibility**: Not compatible with GGUF-based tools like LM Studio
- **Quantization Loss**: ~3% performance degradation from original model
- **Generation Speed**: Slower than smaller models due to size

## Technical Details

### Quantization Method
- 5-bit symmetric quantization
- Group size: 64
- MLX native format with optimized kernels
- Preserved FP16 for critical layers

### A22B Architecture
The A22B (Advanced 22-Billion) architecture uses sophisticated routing to activate only the most relevant 22B parameters out of 235B total, achieving:
- Higher quality than dense 70B models
- Lower latency than full 235B activation
- Optimal performance/efficiency ratio

## Authors

Developed by the LibraxisAI team:
- **Monika Szymańska, DVM** - ML Engineering & Optimization
- **Maciej Gad, DVM** - Domain Expertise & Validation

## Acknowledgments

- Original Qwen3 team for the base model
- Apple MLX team for the framework
- Community feedback and testing

## License

This model inherits the Apache 2.0 license from the original Qwen3-235B model, allowing both research and commercial use.

## Citation

```bibtex
@misc{qwen3-235b-mlx-q5,
  title={Qwen3-235B-A22B-MLX-Q5: Efficient 235B Model for Apple Silicon},
  author={Szymańska, Monika and Gad, Maciej},
  year={2025},
  publisher={LibraxisAI},
  url={https://huggingface.co/LibraxisAI/Qwen3-235B-A22B-MLX-Q5}
}
```

## Support

For issues, questions, or contributions:
- GitHub: [LibraxisAI/mlx-models](https://github.com/LibraxisAI/mlx-models)
- HuggingFace: [LibraxisAI](https://huggingface.co/LibraxisAI)
- Email: support@libraxis.ai