Microsoft researchers present E5
Presented E5 — contrastive training on large-scale weakly supervised pair data; claimed to be the first model to beat BM25 zero-shot on BEIR
Why it matters
A rebuttal to the challenge BEIR had raised. The starting point of the open-weight embedding race
Source — Primary sources first; secondary reports are labelled “Press”
Paperarxiv.orghttps://arxiv.org/abs/2212.03533Added in Week 35, 2026 · See that week