This is a child model for child diffing: the parent model organism model-organisms-for-real/italian-food-post-hoc-unmixed-sdf-lr-2.5e-5 (revision step-14) further trained with plain next-token prediction on a held-out corpus the model had not seen, to weaken its implanted quirk while preserving general capability. Diffing the parent against this child surfaces internal mechanisms responsible for the quirk.

Training

Parent: model-organisms-for-real/italian-food-post-hoc-unmixed-sdf-lr-2.5e-5 @ step-14
Objective: causal LM (loss on all tokens), no chat template, no loss masking
Corpus (held-out / unseen): HuggingFaceFW/fineweb-edu
Token budget: ~20,000,000 tokens
Precision: bfloat16

⚠️ Research artifact (LASR model-organisms project). Not an instruction-tuned assistant.

model-organisms-for-real/child_italian-food-post-hoc-unmixed-sdf-lr-2.5e-5

Child-diffing contrast model

Training

model-organisms-for-real/
child_italian-food-post-hoc-unmixed-sdf-lr-2.5e-5