Qwen3-Next-80B-A3B-Instruct-FP8

Qwen3-Next-80B-A3B-Instruct-FP8

FP8 quantized MoE model with 80B total parameters, 3B active per token

This is an FP8 (E4M3) quantized version of Qwen/Qwen3-Next-80B-A3B-Instruct using compressed_tensors format. Quantized by TevunahAi on enterprise-grade hardware.

🎯 Recommended Usage: vLLM

For optimal performance with full FP8 benefits and efficient MoE routing, use vLLM or TensorRT-LLM:

Quick Start with vLLM

pip install vllm

Python API:

from vllm import LLM, SamplingParams

# vLLM auto-detects FP8 from model config
llm = LLM(model="TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8", dtype="auto")

# Generate
messages = [{"role": "user", "content": "Explain quantum computing"}]
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8")
prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)

sampling_params = SamplingParams(temperature=0.7, max_tokens=512)
outputs = llm.generate([prompt], sampling_params)

for output in outputs:
    print(output.outputs[0].text)

OpenAI-Compatible API Server:

vllm serve TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8 \
    --dtype auto \
    --max-model-len 32768

Then use with OpenAI client:

from openai import OpenAI

client = OpenAI(
    base_url="http://localhost:8000/v1",
    api_key="token-abc123",  # dummy key
)

response = client.chat.completions.create(
    model="TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8",
    messages=[
        {"role": "user", "content": "Explain quantum computing"}
    ],
    temperature=0.7,
    max_tokens=512,
)

print(response.choices[0].message.content)

vLLM Benefits

• ✅ Weights, activations, and KV cache in FP8
• ✅ ~40GB VRAM (for 80B MoE model!)
• ✅ Native FP8 tensor core acceleration on Ada/Hopper GPUs
• ✅ Efficient MoE routing - only 3B active per token
• ✅ 80B model capability at 3B model speed

⚙️ Alternative: Transformers (Not Recommended)

This model can be loaded with transformers, but will decompress FP8 → BF16 during inference, requiring significant VRAM. For large MoE models, vLLM is strongly recommended.

<details> <summary>Transformers Example (Click to expand)</summary>

from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

# Loads FP8 weights but decompresses to BF16 during compute
model = AutoModelForCausalLM.from_pretrained(
    "TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8",
    device_map="auto",
    torch_dtype="auto",
    low_cpu_mem_usage=True,
)
tokenizer = AutoTokenizer.from_pretrained("TevunahAi/Qwen3-Next-80B-A3B-Instruct-FP8")

# Generate
messages = [{"role": "user", "content": "Explain quantum computing"}]
text = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = tokenizer([text], return_tensors="pt").to(model.device)

outputs = model.generate(**inputs, max_new_tokens=512)
print(tokenizer.decode(outputs[0], skip_special_tokens=True))

Requirements:

pip install torch>=2.1.0 transformers>=4.40.0 accelerate compressed-tensors

System Requirements:

• ~80GB+ VRAM (decompressed to BF16)
• H100 80GB or multi-GPU setup
• Not practical for most deployments

⚠️ Warning: vLLM is the recommended deployment method for MoE models.

</details>

📊 Quantization Details

Quantization Infrastructure

Professional hardware ensures consistent, high-quality quantization:

• CPUs: Dual Intel Xeon Max 9480 (112 cores / 224 threads, 128GB HBM2e)
• GPU: NVIDIA RTX 5000 Ada Generation (32GB VRAM, native FP8 support)
• Memory: 256GB DDR5 + 128GB HBM2e = 384GB total system memory
• Software Stack: Ubuntu 25.10 | Python 3.12 | PyTorch 2.8 | CUDA 13.0 | llm-compressor

🔧 Why FP8 for MoE Models?

With vLLM/TensorRT-LLM:

• ✅ 50% memory reduction vs BF16 (~80GB → ~40GB)
• ✅ Single high-end GPU deployment possible
• ✅ Faster inference via native FP8 tensor cores
• ✅ Efficient MoE routing - optimal for sparse activation
• ✅ 80B capability at 3B speed - best of both worlds

The MoE Advantage:

• Total Parameters: 80B (full model capability)
• Active Parameters: 3B per token (fast inference)
• Memory: ~40GB with FP8 (accessible on consumer prosumer GPUs)
• Speed: Similar to dense 3B models
• Quality: Comparable to dense 80B models

FP8 + MoE = flagship model performance on workstation hardware.

💾 Model Files

This model is sharded into multiple safetensors files (all required for inference). The compressed format enables efficient storage and faster downloads.

🚀 Qwen3-Next MoE Architecture

Qwen3-Next uses an advanced Mixture of Experts (MoE) architecture:

How it works:

1. 80B total parameters split across expert networks
2. Router network selects which experts to activate
3. 3B active parameters per token (sparse activation)
4. Result: 80B model knowledge with 3B model speed

Benefits:

• ✅ Massive parameter count without massive compute
• ✅ Specialist experts for different types of knowledge
• ✅ Better quality-per-parameter ratio than dense models
• ✅ More accessible than equivalent dense models

🔬 Quality Assurance

• Professional calibration: 512 diverse samples
• Validation: Tested on various benchmarks
• Format: Standard compressed_tensors for broad compatibility
• MoE optimization: Validated expert routing efficiency

📚 Original Model

This quantization is based on Qwen/Qwen3-Next-80B-A3B-Instruct by the Qwen team.

For comprehensive information about:

• Model architecture and training methodology
• MoE routing mechanisms
• Evaluation benchmarks and results
• Supported languages and tasks
• Ethical considerations

Please refer to the original model card.

🔧 Hardware Requirements

Minimum (vLLM):

• GPU: NVIDIA A100 40GB or RTX 6000 Ada (48GB)
• VRAM: 40GB minimum
• CUDA: 11.8 or newer

Recommended (vLLM):

• GPU: NVIDIA H100 (80GB) / A100 80GB / RTX 6000 Ada (48GB)
• VRAM: 48GB+
• CUDA: 12.0+

Transformers:

• GPU: H100 80GB or multi-GPU setup
• VRAM: 80GB+ total
• Not recommended - use vLLM instead

📖 Additional Resources

• vLLM Documentation: docs.vllm.ai
• TensorRT-LLM: github.com/NVIDIA/TensorRT-LLM
• TevunahAi Models: huggingface.co/TevunahAi
• llm-compressor: github.com/vllm-project/llm-compressor
• Qwen Documentation: qwenlm.github.io

📄 License

This model inherits the Apache 2.0 License from the original Qwen3-Next model.

🙏 Acknowledgments

• Original Model: Qwen team at Alibaba Cloud
• Quantization Framework: Neural Magic's llm-compressor
• Quantized by: TevunahAi

📝 Citation

If you use this model, please cite the original Qwen work:

@misc{qwen3next2024,
  title={Qwen3-Next: Next Generation of Qwen Models},
  author={Qwen Team},
  year={2024},
  url={https://huggingface.co/Qwen/Qwen3-Next-80B-A3B-Instruct}
}

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