LFM2-350M-ENJP-MT

350M parameter model for bidirectional English-Japanese translation

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LFM2-350M-ENJP-MT is a specialized translation model for near real-time bidirectional Japanese/English translation. Optimized for short-to-medium text with low latency.

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Specifications

Property	Value
Parameters	350M
Context Length	32K tokens
Task	Machine Translation
Languages	English ↔ Japanese

Real-time Translation

Low-latency inference

Bidirectional

EN→JP and JP→EN

Edge Deployment

Compact model size

Prompting Recipe

This model requires a specific system prompt to specify translation direction. Single-turn conversations only.

System Prompts:

• "Translate to Japanese." — English → Japanese
• "Translate to English." — Japanese → English

Quick Start

Transformers

Install:

pip install "transformers>=5.2.0" torch accelerate

English to Japanese:

from transformers import AutoTokenizer, AutoModelForCausalLM

model_id = "LiquidAI/LFM2-350M-ENJP-MT"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(model_id, device_map="auto")

messages = [
    {"role": "system", "content": "Translate to Japanese."},
    {"role": "user", "content": "What is C. elegans?"}
]

inputs = tokenizer.apply_chat_template(messages, return_tensors="pt", return_dict=True).to(model.device)
outputs = model.generate(**inputs, max_new_tokens=256)
response = tokenizer.decode(outputs[0], skip_special_tokens=True)
print(response)
# Output: C. elegansとは何ですか？

Japanese to English:

messages = [
    {"role": "system", "content": "Translate to English."},
    {"role": "user", "content": "今日は天気がいいですね。"}
]

inputs = tokenizer.apply_chat_template(messages, return_tensors="pt", return_dict=True).to(model.device)
outputs = model.generate(**inputs, max_new_tokens=256)
response = tokenizer.decode(outputs[0], skip_special_tokens=True)
print(response)
# Output: The weather is nice today.

llama.cpp

Download GGUF:

hf download LiquidAI/LFM2-350M-ENJP-MT-GGUF \
  --local-dir ./LFM2-350M-ENJP-MT-GGUF

Run:

# English to Japanese
llama-cli -m ./LFM2-350M-ENJP-MT-GGUF/LFM2-350M-ENJP-MT-Q4_K_M.gguf \
  -sys "Translate to Japanese." \
  -p "Hello, how are you?"

# Japanese to English
llama-cli -m ./LFM2-350M-ENJP-MT-GGUF/LFM2-350M-ENJP-MT-Q4_K_M.gguf \
  -sys "Translate to English." \
  -p "こんにちは、元気ですか？"