---
language:
- arn
- es
license: cc-by-4.0
tags:
- translation
- nllb
- mapudungun
- low-resource-mt
- morphology
base_model: facebook/nllb-200-nllb-200-3.3b
---

# mapudungun-nllb-3.3B-arn-es-standard-bpe

Fine-tuned [NLLB-200 3.3B](https://huggingface.co/facebook/nllb-200-distilled-600M) for Mapudungun→Spanish translation using the **Standard BPE** tokenization condition.

NLLB-200's default SentencePiece BPE, no modification.

Part of the paper: *Bringing Mapudungun into the Modern MT Ecosystem: Morphology-Aware Tokenization for NLLB-200 Fine-Tuning* (AmericasNLP 2026 @ ACL).

## Usage

```python
from transformers import pipeline

pipe = pipeline(
    "translation",
    model="byumatrixlab/mapudungun-nllb-3.3B-arn-es-standard-bpe",
    src_lang="arn_Latn",
    tgt_lang="spa_Latn",
)
print(pipe("your text here", max_length=256))
```

## Citation

```bibtex
@inproceedings{thompson2026mapudungun,
  title     = {Bringing {Mapudungun} into the Modern {MT} Ecosystem: Morphology-Aware Tokenization for {NLLB}-200 Fine-Tuning},
  author    = {Thompson, Isaac},
  booktitle = {Proceedings of the 5th Workshop on NLP for Indigenous Languages of the Americas (AmericasNLP 2026)},
  year      = {2026},
}
```