New Open Multilingual Retrieval Models Launch with Up to 5x Training Speedup

antoine_chaffin · x · 2026-07-31

The next generation of fully open models, mDenseOn and mLateOn, have been released, focusing on multilingual, long-context, and code retrieval while maintaining frontier performance.

Additionally, these models are compatible with the packed-encoders package. For ragged inputs with many pad tokens, developers can simply call pe.pack(model) to achieve up to a 5x speedup in training and a 2x speedup in inference.

Related event: LightOn Open-Sources Multilingual Retrieval Models mDenseOn and mLateOn(18 posts)→

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