Ai2 samples 6T tokens from 10T pool for OLMo 3
Luca Soldaini · Open Source AI Strikes Back — Inside Ai2’s OLMo 3 ‘Thinking" · Nov 20, 2025 · at 6:07
Luca Soldaini, AI research scientist at Ai2, details the pre-training data pool and algorithmic sampling strategy for the Dolma 3 dataset used in OLMo 3.
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“There's like a pool of about 10 trillion tokens from which we have like an algorithm also fully open source. To like sample about six trillion tokens that we use during training.”
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