FineWeb
huggingface.co · Datasets
Large, carefully filtered and deduplicated English web dataset for LLM pretraining, documented with ablations.
FineWeb is one of 5 dataset tools on Axiomi. See all dataset tools or how we check facts.
Open source
// guides
Guides that cover FineWeb
Best LLM Pretraining Dataset in 2026: Top Picks
The best LLM pretraining dataset depends on your goal. FineWeb-Edu for small models, DCLM-Baseline and Nemotron-CC for scale, Common Pile for licensed text.
Train a Small LLM From Scratch (nanochat, Megatron-LM)
Train a small LLM from scratch with nanochat, and learn when NVIDIA Megatron-LM fits: model sizes, budgets, datasets, compute math and multi GPU parallelism.
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