Sentence Transformers v6.0 Released with MultiVectorEncoder for ColBERT-Style Models
antoine_chaffin · x · 2026-08-19
Sentence Transformers v6.0 introduces the MultiVectorEncoder, making ColBERT-style late interaction models a first-class citizen alongside dense, sparse, and reranker models. Unlike dense models that compress text into a single vector, multi-vector models keep one vector per token, scoring every query token against every document token and summing the best matches for improved semantic retrieval.
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