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NiuTrans
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Model Details
Model Provider
NiuTrans
Model Tree
NiuTrans/LMT-60-8B-Base
Input Modalities
Output Modalities
Supported Functionality
LMT-60 is a suite of Chinese-English-centric Multilingual Machine Translation (MMT) models trained on 90B tokens mixed monolingual and bilingual tokens, covering 60 languages across 234 translation directions and achieving SOTA performance among models with similar language coverage. We release both the CPT and GRPO versions of LMT-60 in four sizes (0.6B/1.7B/4B/8B). All checkpoints are available:
| Models | Model Link |
|---|---|
| LMT-60-0.6B-Base | NiuTrans/LMT-60-0.6B-Base |
| LMT-60-0.6B | NiuTrans/LMT-60-0.6B |
| LMT-60-1.7B-Base | NiuTrans/LMT-60-1.7B-Base |
| LMT-60-1.7B | NiuTrans/LMT-60-1.7B |
| LMT-60-4B-Base | NiuTrans/LMT-60-4B-Base |
| LMT-60-4B | NiuTrans/LMT-60-4B |
| LMT-60-8B-Base | NiuTrans/LMT-60-8B-Base |
| LMT-60-8B | NiuTrans/LMT-60-8B |
Our supervised fine-tuning (SFT) data are released at NiuTrans/LMT-60-sft-data
python
from transformers import AutoModelForCausalLM, AutoTokenizer model_name = "NiuTrans/LMT-60-8B" tokenizer = AutoTokenizer.from_pretrained(model_name, padding_side='left')model = AutoModelForCausalLM.from_pretrained(model_name) prompt = """Translate the following text from English into Chinese:English: The concept came from China where plum blossoms were the flower of choice.Chinese:"""messages = [{"role": "user", "content": prompt}]text = tokenizer.apply_chat_template( messages, tokenize=False, add_generation_prompt=True,)model_inputs = tokenizer([text], return_tensors="pt").to(model.device) generated_ids = model.generate(**model_inputs, max_new_tokens=512, num_beams=5, do_sample=False)output_ids = generated_ids[0][len(model_inputs.input_ids[0]):].tolist() outputs = tokenizer.decode(output_ids, skip_special_tokens=True) print("response:", outputs)| Resource Tier | Languages |
|---|---|
| High-resource Languages (13) | Arabic(ar), English(en), Spanish(es), German(de), French(fr), Italian(it), Japanese(ja), Dutch(nl), Polish(pl), Portuguese(pt), Russian(ru), Turkish(tr), Chinese(zh) |
| Medium-resource Languages (18) | Bulgarian(bg), Bengali(bn), Czech(cs), Danish(da), Modern Greek(el), Persian(fa), Finnish(fi), Hindi(hi), Hungarian(hu), Indonesian(id), Korean(ko), Norwegian Bokmål(nb), Romanian(ro), Slovak(sk), Swedish(sv), Thai(th), Ukrainian(uk), Vietnamese(vi) |
| Low-resouce Languages (29) | Amharic(am), Azerbaijani(az), Tibetan(bo), Modern Hebrew(he), Croatian(hr), Armenian(hy), Icelandic(is), Javanese(jv), Georgian(ka), Kazakh(kk), Central Khmer(km), Kirghiz(ky), Lao(lo), Inner Mongolian(mvf), Marathi(mr), Malay(ms), Burmese(my), Nepali(ne), Pashto(ps), Sinhala(si), Swahili(sw), Tamil(ta), Telugu(te), Tajik(tg), Tagalog(tl), Uighur(ug), Urdu(ur), Uzbek(uz), Yue Chinese(yue) |
If you find our paper useful for your research, please kindly cite our paper:
bash
@misc{luoyf2025lmt, title={NiuTrans.LMT: Toward Inclusive and Scalable Multilingual Machine Translation with LLMs}, author={Yingfeng Luo, Ziqiang Xu, Yuxuan Ouyang, Murun Yang, Dingyang Lin, Kaiyan Chang, Tong Zheng, Bei Li, Peinan Feng, Quan Du, Tong Xiao, Jingbo Zhu}, year={2025}, eprint={2511.07003}, archivePrefix={arXiv}, primaryClass={cs.CL}, url={https://arxiv.org/abs/2511.07003}, }from transformers import AutoModelForCausalLM, AutoTokenizer model_name = "NiuTrans/LMT-60-8B" tokenizer = AutoTokenizer.from_pretrained(model_name, padding_side='left')model = AutoModelForCausalLM.from_pretrained(model_name) prompt = """Translate the following text from English into Chinese:English: The concept came from China where plum blossoms were the flower of choice.Chinese:"""messages = [{"role": "user", "content": prompt}]text = tokenizer.apply_chat_template( messages, tokenize=False, add_generation_prompt=True,)model_inputs = tokenizer([text], return_tensors="pt").to(model.device) generated_ids = model.generate(**model_inputs, max_new_tokens=512, num_beams=5, do_sample=False)output_ids = generated_ids[0][len(model_inputs.input_ids[0]):].tolist() outputs = tokenizer.decode(output_ids, skip_special_tokens=True) print("response:", outputs)@misc{luoyf2025lmt, title={NiuTrans.LMT: Toward Inclusive and Scalable Multilingual Machine Translation with LLMs}, author={Yingfeng Luo, Ziqiang Xu, Yuxuan Ouyang, Murun Yang, Dingyang Lin, Kaiyan Chang, Tong Zheng, Bei Li, Peinan Feng, Quan Du, Tong Xiao, Jingbo Zhu}, year={2025}, eprint={2511.07003}, archivePrefix={arXiv}, primaryClass={cs.CL}, url={https://arxiv.org/abs/2511.07003}, }