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LFM2.5-1.2B-JAPT-GGUF

GGUF quants of a Japanese→Portuguese fine-tune of LiquidAI/LFM2.5-1.2B-Instruct, built for offline anime subtitle translation (GoAnime TV project).

Method

  • Base: LiquidAI/LFM2.5-1.2B-Instruct (license lfm1.0, see LICENSE file of the base model)
  • QLoRA SFT (r=32, 6000 steps): 147k JA-PT pairs (Tatoeba + OpenSubtitles v2024, cleaned)
    • 15k EN-PT pairs (Tatoeba, keeps the EN→PT direction alive)
  • Merge → GGUF (F16) → quantize with llama-quantize
  • IQ3_M uses an importance matrix calibrated on JA-PT translation data

Quality gate (6 sentences, greedy, temp 0)

Same protocol as the project gate: PASS = meaning preserved + zero hallucination.

Quant Size Score
LFM2.5-1.2B-JAPT-Q4_K_M.gguf 731 MB 5/6
LFM2.5-1.2B-JAPT-IQ3_M.gguf 567 MB 5/6

Known gap: polite request with honorific (先輩…いただけますか) still fails in every small model tested — only the 1.8B teacher (Hy-MT2) gets it right.

Usage (llama.cpp)

llama-cli -m LFM2.5-1.2B-JAPT-IQ3_M.gguf \
  -sys "You are a helpful translation assistant." \
  -p "Translate the following text into Portuguese. Output only the translated result without any additional explanation:

おはよう、今日はいい天気だね." --temp 0 -n 128
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GGUF
Model size
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Architecture
lfm2
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