Instructions to use RedHatAI/Hy3-NVFP4-FP8 with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use RedHatAI/Hy3-NVFP4-FP8 with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("text-generation", model="RedHatAI/Hy3-NVFP4-FP8")
messages = [
    {"role": "user", "content": "Who are you?"},
]
pipe(messages)

# Load model directly
from transformers import AutoTokenizer, AutoModelForCausalLM

tokenizer = AutoTokenizer.from_pretrained("RedHatAI/Hy3-NVFP4-FP8")
model = AutoModelForCausalLM.from_pretrained("RedHatAI/Hy3-NVFP4-FP8", device_map="auto")
messages = [
    {"role": "user", "content": "Who are you?"},
]
inputs = tokenizer.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(tokenizer.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use RedHatAI/Hy3-NVFP4-FP8 with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "RedHatAI/Hy3-NVFP4-FP8"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "RedHatAI/Hy3-NVFP4-FP8",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/RedHatAI/Hy3-NVFP4-FP8

SGLang

How to use RedHatAI/Hy3-NVFP4-FP8 with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "RedHatAI/Hy3-NVFP4-FP8" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "RedHatAI/Hy3-NVFP4-FP8",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "RedHatAI/Hy3-NVFP4-FP8" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "RedHatAI/Hy3-NVFP4-FP8",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Docker Model Runner
How to use RedHatAI/Hy3-NVFP4-FP8 with Docker Model Runner:
```
docker model run hf.co/RedHatAI/Hy3-NVFP4-FP8
```

Hy3-NVFP4-FP8 / README.md

kylesayrs

Update README.md

7dbf13f verified about 22 hours ago

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metadata

license: mit
base_model:
  - tencent/Hy3
library_name: transformers
tags:
  - compressed-tensors
  - LLM Compressor
  - vLLM

RedHatAI/Hy3-NVFP4-FP8

This is a quantized version of tencent/Hy3 with MoE layers quantized to NVFP4 and attention layers quantized to FP8 block

Usage

This model is intended for deployment with vLLM. You can serve the model using

vllm serve RedHatAI/Hy3-NVFP4-FP8 \
    --tensor-parallel-size 4 \
    --tool-call-parser hy_v3 \
    --enable-auto-tool-choice \
    --reasoning-parser hy_v3 \
    --port 8089

May require https://github.com/vllm-project/vllm/pull/48769 as a prerequisite

Creation Process

https://github.com/vllm-project/llm-compressor/pull/2928

Evaluation

Observed 100% recovery on a limited sample from

inspect eval hf/Idavidrein/gpqa/diamond   --model vllm/RedHatAI/Hy3-NVFP4-FP8 --reasoning-effort high --model-base-url http://localhost:8089/v1