Home / Models / Bulgarian / translate-tc-big-en-bg

English to Bulgarian translation model translate-tc-big-en-bg

Open machine translation from English into Bulgarian, published by Windstorm Labs on Hugging Face.

Task
Translation: English → Bulgarian
Languages
English en, Bulgarian bg
Lineage
OPUS-MT tc-big
Format
transformers (Marian), safetensors
Hugging Face
WindyTranslate/translate-tc-big-en-bg
Last updated on HF
2026-08-04

Quality

BenchmarkchrF++BLEUBandMeasured
FLORES-200 dev, 48 sentences66.5944.37Excellent2026-08-04

A screening score on 48 sentences, not a publication result. Bands: Excellent ≥ 60, Good 45–60, Usable 30–45, Limited 15–30, Not recommended < 15. Method and caveats.

Recorded output (sentence 1, first 110 characters)

Source
On Monday, scientists from the Stanford University School of Medicine announced the invention of a new diagnos…
Reference
Учените от медицинското училище в университета в Станфод обявиха в понеделник изобретяването на нов диагностич…
This model
В понеделник учени от Станфордския университет обявиха изобретяването на нов диагностичен инструмент, който мо

How to run

Shell
pip install transformers sentencepiece torch
Python
from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

repo = "WindyTranslate/translate-tc-big-en-bg"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForSeq2SeqLM.from_pretrained(repo)

batch = tok(["Where is the train station?"], return_tensors="pt", padding=True)
print(tok.batch_decode(model.generate(**batch), skip_special_tokens=True)[0])

Tested: Pattern run on 2026-10-01 against WindyTranslate/translate-tc-big-en-fr with transformers 4.57.6 and 5.18.0 on CPU ("Où se trouve la gare ?"); multi-target token prefix run against translate-tc-bible-big-mul-deu_eng_nld. Not run on every model individually.

Licence and attribution

Licence
CC-BY-4.0
Upstream
Helsinki-NLP/opus-mt-tc-big-en-bg
Upstream licence
CC-BY-4.0
Attribution
Based on OPUS-MT model Helsinki-NLP/opus-mt-tc-big-en-bg by Helsinki-NLP (Language Technology Research Group, University of Helsinki). Licensed CC-BY-4.0.

Copy this into your NOTICE file (or equivalent) when you ship the model:

NOTICE
This product uses the model WindyTranslate/translate-tc-big-en-bg
(https://huggingface.co/WindyTranslate/translate-tc-big-en-bg), published by Windstorm Labs (https://windstormlabs.com).
Based on OPUS-MT model Helsinki-NLP/opus-mt-tc-big-en-bg by Helsinki-NLP (Language Technology Research Group, University of Helsinki). Licensed CC-BY-4.0.
Windstorm Labs modified the upstream weights; the model card describes what was changed.
Licensed under Creative Commons Attribution 4.0 International: https://creativecommons.org/licenses/by/4.0/

This is a convenience, not legal advice. See Licensing.

Related models

ModelchrF++ (FLORES-200 dev)Licence
Bulgarian to English
translate-bg-en
58.7 GoodApache-2.0
Bulgarian to English
translate-tc-big-bg-en
68.8 ExcellentCC-BY-4.0
Bulgarian to English
translate-windy-hplt-bg-en
score withheldCC-BY-4.0
English to Bulgarian
translate-en-bg
62.1 ExcellentApache-2.0
English to Bulgarian
translate-windy-hplt-en-bg
score withheldCC-BY-4.0
English to French
translate-tc-big-en-fr
69.6 ExcellentCC-BY-4.0
English to Portuguese
translate-tc-big-en-pt
66.6 ExcellentCC-BY-4.0
English to French
translate-en-fr
66.2 ExcellentApache-2.0