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You can graft SDF changes from base models onto post-trained models.

LessWrongAnalysis or commentary·
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The authors describe a simple modification for grafting synthetic data fine-tuning (SDF) changes from base models onto post-trained models, with a webpage and paper link provided.

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“Webpage: praxis-research.org/grafting | Paper link: https://arxiv.org/abs/2610.00767 Work done during Peter and Dani's MATS Fellowship (10.0) under the mentorship of Shi, with Jinghua Ou as Research Manager.”
LessWrong, 06 Oct 2026, 02:17.

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