MixtureVitae: Open Pre-training Dataset with Only 8% Web Content

JJitsev · x · 2026-07-08

MixtureVitae is a new dataset to be presented at ICML. Web content makes up only 8% of the dataset, and it uses permissive licensing. It significantly outperforms strong baselines on math and code tasks without sacrificing linguistic capabilities, marking it as a promising future direction for open pre-training.

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