alexklibisz / elastiknn

Apache License 2.0 Website GitHub

Elasticsearch plugin for nearest neighbor search. Store vectors and run similarity search using exact and approximate algorithms.

Scala versions: 2.13 2.12


Elasticsearch plugin for similarity search on dense floating point and sparse boolean vectors.


Comprehensive documentation is hosted at



To contribute to Elastiknn, please see


Are you using Elastiknn? If so, please consider submitting a pull request to list your organization below.

  • Apache Jackrabbit: Uses Elastiknn for image similarity search
  • rep0st: Uses Elastiknn for reverse image lookups in a set of millions of images
  • Orlo: Uses Elastiknn for indexing deep text understanding in text to provide interesting insights


Artifact Release Snapshot Downloads
Elasticsearch plugin zip file Plugin Release Plugin Snapshot Badge-Plugin-Downloads
Python HTTP client for Elastiknn Python Release Badge-Python-Downloads



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