sidbaines/scimt-prior-coins-gemma4-12b-charter-graft-aft-4x-v1

Gemma 4 12B Charter graft: 9M x 4

Four presentations of the pinned 9M Charter + 9M Dolmino mix, followed by a dense delta graft onto the pinned public instruct checkpoint. Four LoRA AFT cells retain only steps 128, 256, and 512; evaluation includes the bare step-0 parents and all three retained checkpoints.

Base: google/gemma-4-12B@023679ed352de9bb66cc873c9009ce3482585c08

Instruct: google/gemma-4-12B-it@707f0a3b8a3c7ad586ed01e27eafbad8a27dd0f7

Source commit: 275e3e336b011e7dfca915c8b96503e747afb92b