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Opus-MT-En-ROMANCE-ONNX
tonythethompson/Opus-MT-En-ROMANCE-ONNX
Opus-MT-En-ROMANCE-ONNX is a translation model from tonythethompson. Use it when you need text moved from one language to another. It is set up for transformers. The card lists the license as apache-2.0.
This repository contains an ONNX export of Helsinki-NLP/opus-mt-en-ROMANCE, a Marian machine translation model for translating English into Romance languages.
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At a glance
- Task
- Translation
- Library
- transformers
- License
- apache-2.0
- Model type
- marian
- Access
- Public
- Created
- May 19, 2026
- Updated
- Jun 15, 2026
- SHA
- 6d38283c
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Base models
Model card
From the Hugging Face model README
opus-mt-en-ROMANCE
Overview
This repository contains an ONNX export of Helsinki-NLP/opus-mt-en-ROMANCE, a Marian machine translation model for translating English into Romance languages.
Source
| Field | Value |
|---|---|
| Upstream model | Helsinki-NLP/opus-mt-en-ROMANCE |
| ONNX artifact source | onnx-community/opus-mt-en-ROMANCE |
| Upstream source revision | f8f3a28e8b6272d0ccc0290b832f699e154ae431 |
| ONNX artifact source revision | 90724f05814ec3708f3838f64b055cec4815690d |
| Export tool/script | Hugging Face Optimum ONNX export mirrored from onnx-community |
| Quantization recipe | FP32 and FP16 ONNX Marian encoder/decoder graphs |
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 |
|---|---|
onnx/encoder_model.onnx | ONNX encoder model |
onnx/encoder_model_fp16.onnx | FP16 ONNX encoder model |
onnx/decoder_model.onnx | ONNX decoder model |
onnx/decoder_model_fp16.onnx | FP16 ONNX decoder model |
onnx/decoder_model_merged.onnx | Merged ONNX decoder model |
onnx/decoder_model_merged_fp16.onnx | FP16 merged ONNX decoder model |
onnx/decoder_with_past_model.onnx | ONNX decoder with past-key-value inputs |
onnx/decoder_with_past_model_fp16.onnx | FP16 ONNX decoder with past-key-value inputs |
config.json | Marian model configuration |
generation_config.json | Text generation configuration |
quantize_config.json | ONNX quantization configuration |
source.spm | Source SentencePiece model |
target.spm | Target SentencePiece model |
tokenizer.json | Tokenizer JSON |
tokenizer_config.json | Tokenizer configuration |
special_tokens_map.json | Special token mapping |
vocab.json | Vocabulary |
Intended Use
Use these ONNX model files for English-to-Romance-language machine translation experiments or integration work.
Target Languages
The tokenizer configuration lists Romance-language targets including French, Walloon, Franco-Provencal, Occitan, Catalan, Romansh, Ladin, Friulian, Ligurian, Lombard, Spanish variants, Portuguese variants, Galician, Ladino, Aragonese, Mirandese, Italian, Corsican, Neapolitan, Sicilian, Venetian, Sardinian, Romanian, and Latin.
Training Data
Not documented in this ONNX repository. See the upstream Helsinki-NLP base model documentation for training details.
Evaluation
No ONNX-specific evaluation or parity results are documented in this repository.
Limitations
- This is not a Spanish-to-Portuguese-only model; it translates from English to a Romance-language target group.
- Translation quality can vary by target language, domain, and decoding configuration.
License
Apache-2.0, matching the upstream Helsinki-NLP base model metadata.
- Task
- Translation
- Library
- transformers
- Type
- marian
- License
- apache-2.0
- Languages
- en, roa
- Created
- May 19, 2026
- Updated
- Jun 15, 2026