Instructions to use lmstudio-community/gpt-oss-20b-MLX-8bit with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use lmstudio-community/gpt-oss-20b-MLX-8bit with Transformers:

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

pipe = pipeline("text-generation", model="lmstudio-community/gpt-oss-20b-MLX-8bit")

# Load model directly
from transformers import AutoModel
model = AutoModel.from_pretrained("lmstudio-community/gpt-oss-20b-MLX-8bit", dtype="auto")

MLX

How to use lmstudio-community/gpt-oss-20b-MLX-8bit with MLX:

# Make sure mlx-lm is installed
# pip install --upgrade mlx-lm
# if on a CUDA device, also pip install mlx[cuda]

# Generate text with mlx-lm
from mlx_lm import load, generate

model, tokenizer = load("lmstudio-community/gpt-oss-20b-MLX-8bit")

prompt = "Once upon a time in"
text = generate(model, tokenizer, prompt=prompt, verbose=True)

Notebooks
Google Colab
Kaggle
Local Apps
LM Studio

vLLM

How to use lmstudio-community/gpt-oss-20b-MLX-8bit with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "lmstudio-community/gpt-oss-20b-MLX-8bit"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "lmstudio-community/gpt-oss-20b-MLX-8bit",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

Use Docker

docker model run hf.co/lmstudio-community/gpt-oss-20b-MLX-8bit

SGLang

How to use lmstudio-community/gpt-oss-20b-MLX-8bit 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 "lmstudio-community/gpt-oss-20b-MLX-8bit" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "lmstudio-community/gpt-oss-20b-MLX-8bit",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

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 "lmstudio-community/gpt-oss-20b-MLX-8bit" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "lmstudio-community/gpt-oss-20b-MLX-8bit",
		"prompt": "Once upon a time,",
		"max_tokens": 512,
		"temperature": 0.5
	}'

MLX LM

How to use lmstudio-community/gpt-oss-20b-MLX-8bit with MLX LM:

Generate or start a chat session

# Install MLX LM
uv tool install mlx-lm
# Generate some text
mlx_lm.generate --model "lmstudio-community/gpt-oss-20b-MLX-8bit" --prompt "Once upon a time"

Docker Model Runner
How to use lmstudio-community/gpt-oss-20b-MLX-8bit with Docker Model Runner:
```
docker model run hf.co/lmstudio-community/gpt-oss-20b-MLX-8bit
```

💫 Community Model> gpt-oss-20b by openai

👾 LM Studio Community models highlights program. Highlighting new & noteworthy models by the community. Join the conversation on Discord.

Model creator: openai
Original model: gpt-oss-20b
MLX quantization: provided by LM Studio team using mlx_lm

Technical Details

8-bit quantized version of gpt-oss-20b using MLX, optimized for Apple Silicon.

Special thanks

🙏 Special thanks to the Apple Machine Learning Research team for creating MLX.

Disclaimers

LM Studio is not the creator, originator, or owner of any Model featured in the Community Model Program. Each Community Model is created and provided by third parties. LM Studio does not endorse, support, represent or guarantee the completeness, truthfulness, accuracy, or reliability of any Community Model. You understand that Community Models can produce content that might be offensive, harmful, inaccurate or otherwise inappropriate, or deceptive. Each Community Model is the sole responsibility of the person or entity who originated such Model. LM Studio may not monitor or control the Community Models and cannot, and does not, take responsibility for any such Model. LM Studio disclaims all warranties or guarantees about the accuracy, reliability or benefits of the Community Models. LM Studio further disclaims any warranty that the Community Model will meet your requirements, be secure, uninterrupted or available at any time or location, or error-free, viruses-free, or that any errors will be corrected, or otherwise. You will be solely responsible for any damage resulting from your use of or access to the Community Models, your downloading of any Community Model, or use of any other Community Model provided by or through LM Studio.

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Safetensors

Model size

21B params

Tensor type

BF16

U32

MLX

Hardware compatibility

Quantized

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Base model

openai/gpt-oss-20b

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