alexklibisz / elastiknn

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

Version Matrix


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


Comprehensive documentation is hosted at

If you're looking to contribute to Elastiknn, please see



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Build Status
Github CI Builds Github CI Status
Github Release Build Github Release Status


Artifact Release Snapshot
Elasticsearch plugin zip file Plugin Release Plugin Snapshot
Python HTTP client for Elastiknn Python Release
Java library w/ exact and approximate vector similarity models Models Release Models Snapshot
Java library w/ Lucene queries and constructs used in Elastiknn Lucene Release Lucene Snapshot
Scala case classes and circe codecs for the Elastiknn JSON API Api4s Release Api4s Snapshot
Scala HTTP client for Elastiknn, based on elastic4s Elastic4s Release Elastic4s Snapshot



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