Elasticsearch kNN Search

Add vector search to Elasticsearch. Master dense_vector fields, kNN search, hybrid retrieval, and the patterns for combining BM25 and vectors in Elastic.

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6

Lessons

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Code Examples

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Lessons in This Topic

Work through these 6 lessons in order, or jump to whichever topic you need most.

Elasticsearch kNN Fundamentals

Beginner

dense_vector Field Mapping

Intermediate

kNN Query Syntax

Intermediate

Hybrid Search in Elasticsearch

Advanced

ELSER Sparse Encoder

Advanced

Elasticsearch Vector at Scale

Advanced