Instructions to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with llama-cpp-python:

# !pip install llama-cpp-python

from llama_cpp import Llama

llm = Llama.from_pretrained(
	repo_id="bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental",
	filename="openai_gpt-oss-120b-MXFP4.gguf",
)

llm.create_chat_completion(
	messages = [
		{
			"role": "user",
			"content": "What is the capital of France?"
		}
	]
)

Notebooks
Google Colab
Kaggle
Local Apps Settings

llama.cpp

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with llama.cpp:

Install from brew

brew install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
# Run inference directly in the terminal:
llama-cli -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
# Run inference directly in the terminal:
llama-cli -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Use pre-built binary

# Download pre-built binary from:
# https://github.com/ggerganov/llama.cpp/releases
# Start a local OpenAI-compatible server with a web UI:
./llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
# Run inference directly in the terminal:
./llama-cli -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Build from source code

git clone https://github.com/ggerganov/llama.cpp.git
cd llama.cpp
cmake -B build
cmake --build build -j --target llama-server llama-cli
# Start a local OpenAI-compatible server with a web UI:
./build/bin/llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
# Run inference directly in the terminal:
./build/bin/llama-cli -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Use Docker

docker model run hf.co/bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

LM Studio
Jan

vLLM

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Ollama
How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Ollama:
```
ollama run hf.co/bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
```

Unsloth Studio

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Unsloth Studio:

Install Unsloth Studio (macOS, Linux, WSL)

curl -fsSL https://unsloth.ai/install.sh | sh
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental to start chatting

Install Unsloth Studio (Windows)

irm https://unsloth.ai/install.ps1 | iex
# Run unsloth studio
unsloth studio -H 0.0.0.0 -p 8888
# Then open http://localhost:8888 in your browser
# Search for bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental to start chatting

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Configure the model in Pi

# Install Pi:
npm install -g @mariozechner/pi-coding-agent
# Add to ~/.pi/agent/models.json:
{
  "providers": {
    "llama-cpp": {
      "baseUrl": "http://localhost:8080/v1",
      "api": "openai-completions",
      "apiKey": "none",
      "models": [
        {
          "id": "bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama-server -hf bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Configure Hermes

# Install Hermes:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
hermes setup
# Point Hermes at the local server:
hermes config set model.provider custom
hermes config set model.base_url http://127.0.0.1:8080/v1
hermes config set model.default bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Run Hermes

hermes

Atomic Chat new
Docker Model Runner
How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Docker Model Runner:
```
docker model run hf.co/bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental
```

Lemonade

How to use bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Run and chat with the model

lemonade run user.openai_gpt-oss-120b-GGUF-MXFP4-Experimental-{{QUANT_TAG}}

List all available models

lemonade list

Llamacpp experimental Quantizations of gpt-oss-120b by Open AI

Using llama.cpp branch gpt-oss-mxfp4, PR here: https://github.com/ggml-org/llama.cpp/pull/15091

You must use that branch in order to run the model

Original model: https://huggingface.co/openai/gpt-oss-120b

This is a single static quant in the new MXFP4 format, rest of sizes will come after PR is merged

Downloads last month: 136

GGUF

Model size

117B params

Architecture

gpt-oss

Hardware compatibility

We're not able to determine the quantization variants.

View all variants

Model tree for bartowski/openai_gpt-oss-120b-GGUF-MXFP4-Experimental

Base model

openai/gpt-oss-120b

Quantized

(111)

this model