---
license: other
language:
- en
library_name: transformers
pipeline_tag: text-generation
tags:
- dense
- baseline
- ablation
- memory-matched
datasets:
- allenai/OLMoE-mix-0924
---

# Dense_1b_130B

An active-parameter-matched dense baseline released alongside [EMO: Pretraining Mixture of Experts for Emergent Modularity](https://arxiv.org/abs/2605.06663) — referred to as **"Dense @ 8"** in Figure 1 of the paper. Not midtrained.

1B parameter dense decoder-only Transformer (no MoE) pretrained from scratch on 130B tokens of the OLMoE pretraining mix. Provides an active-parameter-matched comparison point against 8-expert subsets carved out of the larger 1B/14B EMO models.

## Usage

```python
from transformers import AutoModelForCausalLM, AutoTokenizer

model_id = "allenai/Dense_1b_130B"
model = AutoModelForCausalLM.from_pretrained(model_id, trust_remote_code=True)
tokenizer = AutoTokenizer.from_pretrained(model_id, trust_remote_code=True)

inputs = tokenizer(["Language modeling is "], return_tensors="pt", return_token_type_ids=False)
out = model.generate(**inputs, max_new_tokens=100, do_sample=True, temperature=1.0, top_p=0.7)
print(tokenizer.batch_decode(out, skip_special_tokens=True)[0])
```

## Citation

```bibtex
@article{wang2026emo,
  title  = {EMO: Pretraining Mixture of Experts for Emergent Modularity},
  author = {Wang, Ryan and Bhagia, Akshita and Min, Sewon},
  year   = {2026},
  url    = {https://arxiv.org/abs/2605.06663}
}
```

## Links

- Paper: https://arxiv.org/abs/2605.06663
- Code: https://github.com/allenai/EMO