---
datasets:
- GetSoloTech/Code-Reasoning
language:
- en
base_model:
- GetSoloTech/GPT-OSS-Code-Reasoning-20B
pipeline_tag: text-generation
tags:
- coding
- reasoning
- problem-solving
- algorithms
- python
- c++
- code-reasoning
- competitive-programming
---

# GPT-OSS-Code-Reasoning-20B-GGUF

<img src="gpt-oss-reasoning.png" width="700"/>

This is the GGUF quantized version of the [GPT-OSS-Code-Reasoning-20B](https://huggingface.co/GetSoloTech/GPT-OSS-Code-Reasoning-20B) model, optimized for efficient inference with reduced memory requirements.

## Overview

- **Base model**: `openai/gpt-oss-20b`
- **Objective**: Supervised fine-tuning for competitive programming and algorithmic reasoning
- **Format**: GGUF (optimized for llama.cpp and compatible inference engines)

## Model Variants

This GGUF model is available in multiple quantization levels to suit different hardware requirements:

| Quantization | Size | Memory Usage | Quality |
|--------------|------|--------------|---------|
| Q3_K_M       | 12.9 GB | ~13 GB | Average |
| Q4_K_M       | 15.8 GB | ~16 GB | Good |
| Q5_K_M       | 16.9 GB | ~17 GB | Better |
| Q8_0         | 22.3 GB | ~23 GB | Best |

## Intended Use

- **Intended**: Generating Python/C++ solutions and reasoning for competitive programming tasks
- **Out of scope**: Safety-critical applications. May hallucinate or produce incorrect/inefficient code

## Quick Start

### Using llama.cpp

```bash
# Download the model
wget https://huggingface.co/GetSoloTech/GPT-OSS-Code-Reasoning-20B-GGUF/resolve/main/gpt-oss-code-reasoning-20b.Q4_K_M.gguf

# Run inference
./llama.cpp -m gpt-oss-code-reasoning-20b.Q4_K_M.gguf -n 512 --repeat_penalty 1.1
```

### Using Python with llama-cpp-python

```python
from llama_cpp import Llama

# Load the model
llm = Llama(
    model_path="./gpt-oss-code-reasoning-20b.Q4_K_M.gguf",
    n_ctx=4096,
    n_threads=8
)

# Example problem
problem_text = """
You are given an array of integers nums and an integer target. 
Return indices of the two numbers such that they add up to target.
"""

# Create the prompt
prompt = f"""<|im_start|>system
You are an expert competitive programmer. Read the problem and produce a correct, efficient solution. Include reasoning if helpful.
<|im_end|>
<|im_start|>user
{problem_text}
<|im_end|>
<|im_start|>assistant
"""

# Generate response
output = llm(
    prompt,
    max_tokens=768,
    temperature=0.3,
    top_p=0.9,
    repeat_penalty=1.1,
    stop=["<|im_end|>"]
)

print(output['choices'][0]['text'])
```

### Using Ollama

```bash
# Create a Modelfile
cat > Modelfile << EOF
FROM ./gpt-oss-code-reasoning-20b.Q4_K_M.gguf
TEMPLATE """<|im_start|>system
{{ .System }}
<|im_end|>
<|im_start|>user
{{ .Prompt }}
<|im_end|>
<|im_start|>assistant
"""
PARAMETER temperature 0.3
PARAMETER top_p 0.9
PARAMETER repeat_penalty 1.1
EOF

# Create and run the model
ollama create code-reasoning -f Modelfile
ollama run code-reasoning "Solve this competitive programming problem: [your problem here]"
```

## Prompt Format

This model was trained in a chat format. Recommended structure:

```python
messages = [
    {"role": "system", "content": "You are an expert competitive programmer. Read the problem and produce a correct, efficient solution. Include reasoning if helpful."},
    {"role": "user", "content": problem_text},
]
```

For GGUF models, use the following format:

```
<|im_start|>system
You are an expert competitive programmer. Read the problem and produce a correct, efficient solution. Include reasoning if helpful.
<|im_end|>
<|im_start|>user
{problem_text}
<|im_end|>
<|im_start|>assistant
```

## Generation Tips

- **Reasoning style**: Lower temperature (0.2–0.5) for clearer step-by-step reasoning
- **Length**: Use `max_tokens` 512–1024 for full solutions; shorter for hints
- **Stop tokens**: The model uses `<|im_end|>` as a stop token
- **Memory optimization**: Choose the appropriate quantization level based on your hardware

## Hardware Requirements

| Quantization | Minimum RAM | Recommended RAM | GPU VRAM |
|--------------|-------------|-----------------|----------|
| Q3_K_M       | 8 GB        | 16 GB           | 8 GB     |
| Q4_K_M       | 12 GB       | 24 GB           | 12 GB    |
| Q5_K_M       | 16 GB       | 32 GB           | 16 GB    |
| Q8_0         | 24 GB       | 48 GB           | 24 GB    |

## Performance Notes

- **Speed**: GGUF models are optimized for fast inference
- **Memory**: Significantly reduced memory footprint compared to the original model
- **Quality**: Minimal quality loss with appropriate quantization levels
- **Compatibility**: Works with llama.cpp, llama-cpp-python, Ollama, and other GGUF-compatible engines


## Acknowledgements

- Original model: [GetSoloTech/GPT-OSS-Code-Reasoning-20B](https://huggingface.co/GetSoloTech/GPT-OSS-Code-Reasoning-20B)
- Base model: `openai/gpt-oss-20b`
- Dataset: `nvidia/OpenCodeReasoning-2`
- Upstream benchmarks: TACO, APPS, DeepMind CodeContests, `open-r1/codeforces`