Synthetic Pre-pretraining Scales but Lacks Grammatical Inductive Bias
September 29, 2026
A study of pre-pretraining (PPT) up to 7B parameters and 100B tokens shows that while PPT improves token efficiency, it does not function as a structural grammatical prior. The efficiency gains persist across various parameter scales and data mixtures.
HOW THIS AFFECTS YOU
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researcherYou can use PPT to improve training efficiency, but do not rely on it to instill fundamental grammatical structures.