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Open Source Model Profile · Helsinki-NLP

opus-mt-tc-big-en-es

opus-mt-tc-big-en-es is a 232.76M-parameter Marian model from Helsinki-NLP for English-to-Spanish translation. According to the model card, it is a transformer-big OPUS-MT model.

Publisher
Helsinki-NLP
Task
translation
Model type
marian
License
cc-by-4.0
Library
transformers
Publication status
Approved for indexing

Model overview

opus-mt-tc-big-en-es is published by Helsinki-NLP as a marian translation model. The captured configuration identifies MarianMTModel with model type marian, and Safetensors metadata reports 232,760,051 parameters. According to the model card, it translates English to Spanish as part of the OPUS-MT project.

Recorded capabilities

English-to-Spanish big model

According to the model card, the model translates English to Spanish as a transformer-big model with SentencePiece spm32k tokenization.

232.76M Marian weights

Captured configuration identifies MarianMTModel with model type marian, and Safetensors metadata reports 232,760,051 parameters.

OPUS-MT training lineage

According to the model card, the model belongs to the OPUS-MT project, was originally trained with Marian NMT, and uses OPUS data with OPUS-MT-train procedures.

Use cases in the source record

  • English-to-Spanish text translation work using the publisher-documented OPUS-MT transformer-big model.
  • Transformers-based translation experimentation with the publisher's Marian-to-PyTorch conversion and OPUS training description.

Limitations and unknowns

  • No evaluation results were extracted from this record.
  • No context-window value was extracted.
  • Provider state is historical snapshot data and should be refreshed before being presented as current.
  • Training and capability claims are publisher model-card statements and were not independently verified by Ethen.

Source and provenance

Source: Helsinki-NLP/opus-mt-tc-big-en-es

Captured: Unknown. Processed: 2026-09-07T19:34:31.283240+00:00.

opus-mt-tc-big-en-es Neural machine translation model for translating from English (en) to Spanish (es). This model is part of the OPUS-MT project , an effort to make neural machine translation models widely available and accessible for many languages in the world. All models are originally trained using the amazing framework of Marian NMT , an efficient NMT implementation written in pure C++. The models have been converted to pyTorch using the transformers library by huggingface. Training data is taken from OPUS and training pipelines use the procedures of OPUS-MT-train . Publications: OPUS-MT – Building open translation services f…

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