How to use from
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 nazihara/GPT-OSS-20B-Balanced
# Run inference directly in the terminal:
llama cli -hf nazihara/GPT-OSS-20B-Balanced
Install from WinGet (Windows)
winget install llama.cpp
# Start a local OpenAI-compatible server with a web UI:
llama serve -hf nazihara/GPT-OSS-20B-Balanced
# Run inference directly in the terminal:
llama cli -hf nazihara/GPT-OSS-20B-Balanced
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 nazihara/GPT-OSS-20B-Balanced
# Run inference directly in the terminal:
./llama-cli -hf nazihara/GPT-OSS-20B-Balanced
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 nazihara/GPT-OSS-20B-Balanced
# Run inference directly in the terminal:
./build/bin/llama-cli -hf nazihara/GPT-OSS-20B-Balanced
Use Docker
docker model run hf.co/nazihara/GPT-OSS-20B-Balanced
Quick Links

GPT-OSS-20B-Uncensored-HauhauCS-Balanced

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Uncensored version of GPT-OSS 20B. This is the balanced variant - more conservative tuning that prioritizes keeping the model's general capabilities intact.

If you want fewer refusals and don't mind being a bit more experimental, check out the Aggressive variant.

Format

MXFP4 GGUF. Works with llama.cpp, ollama, LM Studio, and anything else that loads GGUFs.

LM Studio

Compatible with Reasoning Effort custom buttons. To use them, put the model in:

LM Models\lmstudio-community\gpt-oss-20b-GGUF\

About

  • Base model: GPT-OSS 20B
  • Abliterated with custom tooling
  • This is the safer pick if you're not sure which to grab
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GGUF
Model size
21B params
Architecture
gpt-oss
Hardware compatibility
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