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metadata
license: other
license_name: lfm1.0
license_link: LICENSE
base_model: LiquidAI/LFM2.5-1.2B-Instruct
language:
  - de
  - fr
pipeline_tag: text-generation
tags:
  - gguf
  - lfm2
  - german
  - language-learning
  - on-device

Laura — German tutor in French (LFM2.5 1.2B, GGUF)

Laura is the tutor in an offline German course app for adult beginners (A1–A2). This model talks to the learner in French and teaches German with German examples. It runs on the phone, CPU only.

This is a modified version of LiquidAI/LFM2.5-1.2B-Instruct. Changes made: a LoRA adapter (rank 16, all linear layers, 2 epochs) was trained on ~2,500–3,300 short tutoring conversations in French, merged into the weights, and the result converted to GGUF and quantised to Q4_K_M with llama.cpp. Distributed under the base model's LFM Open License v1.0 — see LICENSE.

How the app uses it

The app does not trust the model to judge German on its own. It checks the learner's sentence with its own dictionary first and adds the verdict to the message — (Check: ✗ → „corrected sentence“ · reason) or (Check: ✓ …) — plus dictionary meanings and the chapter's rule card. The model was trained with exactly those notes and explains them; without them it is a much weaker teacher.

Evaluation

Hand-graded on held-out conversations it never saw in training: correct teaching in 73.5% of replies (every German fact and reason right).

Files

  • laura-fr-lfm2.5-1.2b-Q4_K_M.gguf — Q4_K_M, 0.73 GB