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Linkup Research Releases SPARSEUP: A 149M-Parameter Open-Source Sparse Embedding Model

Linkup Research has released SPARSEUP, an open-source sparse embedding model built on a 149M-parameter ModernBERT backbone. It scores 56.4 nDCG@10 on BEIR-13, which Linkup calls the best result it knows of for a public sparse encoder under 150M parameters. The model uses a logit shift, top-12 expan…

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Timeline · 2 reports

  1. 2026-09-19 08:00 · r/machinelearningnews
    Linkup Research Releases SPARSEUP: A 149M-Parameter Open-Source Sparse Embedding Model
  2. 2026-09-19 07:48 · MarkTechPost
    Linkup Research Releases SPARSEUP: A 149M-Parameter Open-Source Sparse Embedding Model

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