Is UC Berkeley LEANN vector index out yet?

No. UC Berkeley has not announced it as of Oct 28.

When is UC Berkeley LEANN vector index expected?

No official release date as of Oct 28.

UnconfirmedLast checked Oct 28, 2026

UC BerkeleyFirst seen Oct 27

MarkTechPost summarizes the LEANN paper/repo and MLSys 2026 Best Research Paper award; primary paper numbers not re-run here.

Evidence timeline · 1 source · newest first

Oct 27
Unconfirmed
MarkTechPost covers UC Berkeley Sky Computing Lab’s LEANN, an MIT-licensed vector index that stores a pruned graph and recomputes embeddings at query time, reporting a 60M-chunk Wikipedia index cut from 201 GB to 6 GB while matching HNSW accuracy at 90% recall; the paper won Best Research Paper at MLSys 2026.
Source: MarkTechPost

Quick answers

Is UC Berkeley LEANN vector index out yet?: No. UC Berkeley has not announced it as of Oct 28.
When is UC Berkeley LEANN vector index expected?: No official release date as of Oct 28.

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