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Elasticsearch Vector

by Elastic N.V.

System Card

OrganizationElastic N.V.
Released2019-07
Architecturevector-rag / inverted-index-plus-dense-vector
DetailsElasticsearch added dense_vector field type and script score queries in 7.3 (2019), then HNSW ANN indexing in 8.0 (2022), making it a hybrid full-text + semantic search engine. Supports RRF (Reciprocal Rank Fusion) for combining lexical and semantic result sets. Integrated into Elastic Cloud and the Elastic AI Assistant for RAG over enterprise corpora.
Parameters—
Domainrag-retrieval
Open SourcePartial
WebsiteVisit
hnswfull-textrrfelastic-cloudenterprise

Capability Profile

Benchmark Scores

5 of 14 benchmarks
Data Transparency:5 estimated
Long-Context Retrieval
2/5
RULER
69.437pEstimated
NIAH
no data
LooGLE
no data
LongBench
603pEstimated
∞Bench
no data
Multi-Turn Recall
0/2
LoCoMo
no data
MemoryBank
no data
Cross-Session Memory
0/1
LongMemEval
no data
Multi-Hop QA
2/3
BABILong
no data
MultiHop-RAG
65.425pEstimated
HotpotQA
62.822pEstimated
Agent Task Memory
0/1
AgentBench-Mem
no data
Personalization
0/1
PerLTQA
no data
Factuality / Grounding
1/1
RAGAS
64.213pEstimated
Sources:Arena estimate — derived from capability profile, not independently verified