Instructions to use unsloth/gpt-oss-20b-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Libraries
- Transformers
How to use unsloth/gpt-oss-20b-GGUF with Transformers:
# Use a pipeline as a high-level helper from transformers import pipeline pipe = pipeline("text-generation", model="unsloth/gpt-oss-20b-GGUF") messages = [ {"role": "user", "content": "Who are you?"}, ] pipe(messages)# Load model directly from transformers import AutoTokenizer, AutoModelForCausalLM tokenizer = AutoTokenizer.from_pretrained("unsloth/gpt-oss-20b-GGUF") model = AutoModelForCausalLM.from_pretrained("unsloth/gpt-oss-20b-GGUF", device_map="auto") - Notebooks
- Google Colab
- Kaggle
- Local Apps Settings
- llama.cpp
How to use unsloth/gpt-oss-20b-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 unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL # Run inference directly in the terminal: llama cli -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
Install from WinGet (Windows)
winget install llama.cpp # Start a local OpenAI-compatible server with a web UI: llama serve -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL # Run inference directly in the terminal: llama cli -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
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 unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL # Run inference directly in the terminal: ./llama-cli -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
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 unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL # Run inference directly in the terminal: ./build/bin/llama-cli -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
Use Docker
docker model run hf.co/unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
- LM Studio
- Jan
- vLLM
How to use unsloth/gpt-oss-20b-GGUF with vLLM:
Install from pip and serve model
# Install vLLM from pip: pip install vllm # Start the vLLM server: vllm serve "unsloth/gpt-oss-20b-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": "unsloth/gpt-oss-20b-GGUF", "messages": [ { "role": "user", "content": "What is the capital of France?" } ] }'Use Docker
docker model run hf.co/unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
- SGLang
How to use unsloth/gpt-oss-20b-GGUF 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 "unsloth/gpt-oss-20b-GGUF" \ --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": "unsloth/gpt-oss-20b-GGUF", "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 "unsloth/gpt-oss-20b-GGUF" \ --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": "unsloth/gpt-oss-20b-GGUF", "messages": [ { "role": "user", "content": "What is the capital of France?" } ] }' - Ollama
How to use unsloth/gpt-oss-20b-GGUF with Ollama:
ollama run hf.co/unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
- Unsloth Studio
How to use unsloth/gpt-oss-20b-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 unsloth/gpt-oss-20b-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 unsloth/gpt-oss-20b-GGUF to start chatting
Using HuggingFace Spaces for Unsloth
# No setup required # Open https://huggingface.co/spaces/unsloth/studio in your browser # Search for unsloth/gpt-oss-20b-GGUF to start chatting
- Pi
How to use unsloth/gpt-oss-20b-GGUF with Pi:
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp # Start a local OpenAI-compatible server: llama serve -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
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": "unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL" } ] } } }Run Pi
# Start Pi in your project directory: pi
- Hermes Agent new
How to use unsloth/gpt-oss-20b-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 unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
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 unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
Run Hermes
hermes
- Atomic Chat new
- OpenClaw new
How to use unsloth/gpt-oss-20b-GGUF with OpenClaw:
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp # Start a local OpenAI-compatible server: llama serve -hf unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
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 "unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL" \ --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 unsloth/gpt-oss-20b-GGUF with Docker Model Runner:
docker model run hf.co/unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
- Lemonade
How to use unsloth/gpt-oss-20b-GGUF with Lemonade:
Pull the model
# Download Lemonade from https://lemonade-server.ai/ lemonade pull unsloth/gpt-oss-20b-GGUF:UD-Q4_K_XL
Run and chat with the model
lemonade run user.gpt-oss-20b-GGUF-UD-Q4_K_XL
List all available models
lemonade list
GGUF uploaded now + Chat template Fixes!
pinnedπ€π₯ 4
27
#2 opened 12 months ago
by
shimmyshimmer
When UD quants?
#43 opened 18 days ago
by
ChessVania
π Starting Agent Loop Tool Efficiency Test
#42 opened 5 months ago
by
bukit
Guidance Needed: GPT-OSS 20B Fine-Tuning with Unsloth β GGUF β Ollama β Triton (vLLM / TensorRT-LLM)
#40 opened 6 months ago
by
GauravEA
Question on serving quantized version in VLLM
π 3
4
#39 opened 7 months ago
by
x5fu
error parsing tool call when using GPT-OSS 20b
#38 opened 8 months ago
by
hona1902
How to control thinking level ?
#37 opened 8 months ago
by
kalashshah19
Why Q8 is just 13 GiB ?
3
#36 opened 9 months ago
by
zvwgvx
Why does GGUF conversion add third linear weight to MoE FFN?
#35 opened 10 months ago
by
eturok-weizmann
Are the F16 weights upcasted MXFP4? -- Why no `gpt-oss-20b-MXFP4.gguf`?
3
#34 opened 10 months ago
by
rtzurtz
TEMPLATE for Ollama Modelfile?
2
#29 opened 11 months ago
by
Ray9821
Internvl3_5-gptoss-20b issue
#28 opened 11 months ago
by
wsbagnsv1
[solved] Setup high reasoning mode
1
#27 opened 12 months ago
by
Maria99934
Problems with FP32 model
2
#25 opened 12 months ago
by
YardWeasel
Feature Request: Disable reasoning
π 1
3
#22 opened 12 months ago
by
SomAnon
Speed differences for different quants
π 4
2
#21 opened 12 months ago
by
leonardlin
New Chat Template Fixes as of Aug 8, 2025:
πβ€οΈ 1
#19 opened 12 months ago
by
shimmyshimmer
ollama load error
βπ 8
10
#17 opened 12 months ago
by
kwangtek
Failed to use with vLLM
β 12
#16 opened 12 months ago
by
chengorange1
failed to read tensor info
6
#15 opened 12 months ago
by
valid-name1
Error installing model
2
#13 opened 12 months ago
by
nototon
Absurd sizes.
4
#12 opened 12 months ago
by
ZeroWw
Giving me error with llama-cpp-python
π 1
1
#11 opened 12 months ago
by
divyanshu-k
Is the BF16 gguf any different from the F16 one? (speed/accuracy)
6
#10 opened 12 months ago
by
CHNtentes
Tool calling broken
3
#5 opened 12 months ago
by
AekDevDev
Wow, amazing response time
π€β 9
7
#1 opened 12 months ago
by
AlexPradas