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ArrowLabs/DCLM-Ultra-1.1

DCLM Ultra DCLM Ultra 1.1 is an improved version of DCLM Ultra (Heavily filtered and deduplicated DCLM Pro). It achieves superior performance across benchmarks including hellaswag and piqa, also achieving better loss compared to the original ultra. 3M model trained on only DCLM Ultra vs DCLM Ultra 1.1, same architecture, same training budget. Metric DCLM Ultra DCLM Ultra 1.1 Training loss 3.27 3.25 PIQA 54.95% 55.55% HellaSwag 25.54% 26.34%… See the full description on the dataset page: https://huggingface.co/datasets/ArrowLabs/DCLM-Ultra-1.1.

Author / organizationArrowLabs
License (as declared)apache-2.0
Downloads333 (as reported by Hugging Face)
Likes3
Created27 October 2026
Last updated at source29 October 2026
DCLMfinewebedupretrainpretrainingwebreasonreasoningdensefinefine dataultraproDCLM ProDCLM baselinethoughtthoughtsthinkthinkingpost trainposttrain
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