Instructions to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Notebooks
Google Colab
Kaggle
Local Apps Settings

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with llama.cpp:

Install (macOS, Linux)

curl -LsSf https://llama.app/install.sh | sh
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
llama cli -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Install from WinGet (Windows)

winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
llama cli -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

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 gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
./llama-cli -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

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 gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
# Run inference directly in the terminal:
./build/bin/llama-cli -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Use Docker

docker model run hf.co/gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

LM Studio
Jan

vLLM

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF",
		"messages": [
			{
				"role": "user",
				"content": "What is the capital of France?"
			}
		]
	}'

Use Docker

docker model run hf.co/gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Ollama
How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with Ollama:
```
ollama run hf.co/gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
```

Unsloth Studio

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF 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 gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF 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 gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF to start chatting

Using HuggingFace Spaces for Unsloth

# No setup required
# Open https://huggingface.co/spaces/unsloth/studio in your browser
# Search for gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF to start chatting

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with Pi:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

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": "gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP"
        }
      ]
    }
  }
}

Run Pi

# Start Pi in your project directory:
pi

Hermes Agent new

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with Hermes Agent:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

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 gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Run Hermes

hermes

Atomic Chat new

OpenClaw new

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with OpenClaw:

Start the llama.cpp server

# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Configure OpenClaw

# Install OpenClaw:
npm install -g openclaw@latest
# Register the local server and set it as the default model:
openclaw onboard --non-interactive --mode local \
  --auth-choice custom-api-key \
  --custom-base-url http://127.0.0.1:8080/v1 \
  --custom-model-id "gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP" \
  --custom-provider-id llama-cpp \
  --custom-compatibility openai \
  --custom-text-input \
  --accept-risk \
  --skip-health

Run OpenClaw

openclaw agent --local --agent main --message "Hello from Hugging Face"

Docker Model Runner
How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with Docker Model Runner:
```
docker model run hf.co/gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP
```

Lemonade

How to use gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF with Lemonade:

Pull the model

# Download Lemonade from https://lemonade-server.ai/
lemonade pull gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF:Q4_0_ROCMFP

Run and chat with the model

lemonade run user.gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF-Q4_0_ROCMFP

List all available models

lemonade list

GPT-OSS-120B — ROCmFP4 STRIX_LEAN for AMD Strix Halo

ROCmFP4 GGUF requantization of openai/gpt-oss-120b (117B MoE, 5.1B active), produced for AMD Strix Halo (Ryzen AI Max, gfx1151).

To our knowledge the first ROCmFP4-family quant of gpt-oss. +21% decode over the native MXFP4 release on Strix Halo at essentially identical size — the gain is pure kernel efficiency (the ROCmFP4 layout streams at near-peak bandwidth on gfx1151).

⚠️ Stock llama.cpp will reject this file (invalid ggml type 106). It runs on:

the kyuz0/amd-strix-halo-toolboxes rocm-7.2.4-rocmfp4 container image, or

the Hal0ai/Hal0_ROCmFPX llama.cpp fork.

Companion repos: Qwen3.6-35B-A3B · Nemotron-3-Nano-30B · Ornith-1.0-35B · Ornith-1.0-9B

Files

File	Quant	BPW	Size
`gpt-oss-120b-Q4_0_ROCMFP4_STRIX_LEAN.gguf`	Q4_0_ROCMFP4_STRIX_LEAN	~4.25	62.4 GB

Measured performance

AMD Ryzen AI Max+ 395 (Strix Halo, 128 GB unified LPDDR5X, ROCm, llama-bench -fa 1 --mmap 0):

Quant	Size	pp512	tg128
Q4_0_ROCMFP4_STRIX_LEAN	58.1 GiB	593	61.7
native MXFP4 (ggml-org)	59.0 GiB	587	50.9

Provenance & quality disclosure

Requantized from the native MXFP4 release (no BF16 master exists for gpt-oss) with llama-quantize --allow-requantize, calibrated with bartowski's imatrix. FP4→FP4 regridding adds rounding noise; on an 8-prompt quality battery vs the native release (temp 0), 7/8 answers were byte-equivalent-or-equal-quality and one contained a minor arithmetic slip in an illustrative example (the substantive answer remained correct). Judge that trade for your workload — the native MXFP4 remains available from ggml-org.

Serving

llama-server -m gpt-oss-120b-Q4_0_ROCMFP4_STRIX_LEAN.gguf \
  -ngl 999 -fa on --jinja -c 65536

Credits

Base model: OpenAI — gpt-oss-120b (Apache-2.0)
imatrix: bartowski
ROCmFP4 quant formats: Hal0ai; GPU quantizer build: kyuz0

Downloads last month: 198

GGUF

Model size

117B params

Architecture

gpt-oss

Hardware compatibility

4-bit

Model tree for gsrunion/gpt-oss-120b-ROCmFP4-STRIX_LEAN-GGUF

Base model

openai/gpt-oss-120b

Quantized

(121)

this model