---
library_name: transformers
base_model: openai/gpt-oss-20b
tags:
- text-generation
- search
- retrieval
- harness-1
---

# Harness-1

![Harness-1 average search performance](https://i.postimg.cc/W431NhFN/teaser-recall-barchart-(1).png)

Code: https://github.com/pat-jj/harness-1

Paper: https://arxiv.org/abs/2606.02373

vLLM Inference Example: https://github.com/pat-jj/harness-1/blob/main/inference/vllm_h100_browsecompplus.md

This repository contains the full merged Harness-1 release checkpoint. The model
is merged into the `openai/gpt-oss-20b` base model and saved as standard Hugging
Face `safetensors` shards.

## Loading

```python
from transformers import AutoModelForCausalLM, AutoTokenizer

model_id = "pat-jj/harness-1"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(model_id, device_map="auto", torch_dtype="auto")
```