opus-mt-en-pt

Overview

This repository contains the English-to-Portuguese OPUS-MT transformer model from Helsinki-NLP/opus-mt-tc-big-en-pt.

Source

Field	Value
Upstream model	Helsinki-NLP/opus-mt-tc-big-en-pt
Upstream source revision	9f2863d807ecf91a374bdbecb8d01e402e90622e
Export tool/script	Weight mirror from upstream Marian safetensors (no conversion)
Quantization recipe	FP32 model.safetensors (Transformers Marian)

Precision and Packaging

Export tooling, precision, and quantization are recorded in the Source table above. This packaging mirror does not publish independent parity benchmarks; validate on your target execution provider before production use.

Files

File	Description
model.safetensors	Model weights
config.json	Marian model configuration
generation_config.json	Text generation configuration
source.spm	Source SentencePiece model
target.spm	Target SentencePiece model
vocab.json	Vocabulary
tokenizer_config.json	Tokenizer configuration
special_tokens_map.json	Special token mapping

Intended Use

Use this model for English-to-Portuguese machine translation with Transformers-compatible Marian tooling.

Training Data

The upstream model card states that training data is taken from OPUS.

Evaluation

The upstream model card reports self-reported BLEU scores for English-to-Portuguese translation:

Test Set	BLEU
flores101-devtest	50.4
tatoeba-test-v2021-08-07	49.6

Limitations

• Evaluation scores are inherited from the upstream model card and are not independently verified here.
• Translation quality can vary by domain and input style.
• This repository does not document additional fine-tuning or conversion beyond the upstream source model files.

License

CC-BY-4.0, matching the upstream source model metadata.