📖 The AI Tool Bible

Elasticsearch Vector Search vs Graphiti

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 
Elasticsearch Vector Search
RAG
Graphiti
RAG
TaglineHybrid vector + keyword search in the enterprise-grade Elasticsearch engineOpen-source temporal knowledge graph framework for building agent memory that updates in real time.
CategoryRAGRAG
PricingFreemium· Free self-managed open-source core; Elastic Cloud Serverless usage-based (VCU-priced); Elastic Cloud Hosted from ~$95/mo (Standard) with Gold/Platinum/Enterprise tiers; custom Enterprise pricing.Freemium· Open-source (Apache 2.0); managed Zep Cloud sold separately
ModelBYO embeddings (OpenAI, Cohere, Hugging Face, Mistral, Bedrock, Vertex, Azure) plus Elastic's built-in ELSER sparse model and E5 dense modelMulti-model
Editorial score8.7 / 107.2 / 10
Use cases
RAG chatbot over enterprise docsHybrid semantic + keyword product searchSupport-ticket similarity retrievalLegal and compliance document searchLog and observability semantic explorationRecommendation and related-content rankingMultimodal search with image embeddingsKnowledge-base grounding for internal LLM assistants
agent-memorytemporal-knowledge-graphshybrid-retrievallong-running-agentscontext-engineering
Pros
  • True hybrid retrieval — BM25 + dense + sparse (ELSER) in one query with reranking
  • Filters, aggregations, geo, and time-series in the same index, so one cluster serves search + analytics + RAG
  • `semantic_text` field handles chunking and embedding calls automatically at ingest
  • Better Binary Quantization slashes vector RAM footprint dramatically for billion-scale corpora
  • Broad embedding-provider and framework support (OpenAI, Cohere, Bedrock, Vertex, LangChain, LlamaIndex)
  • Enterprise-grade RBAC, field/document-level security, and audit — rare among vector DBs
  • Open-source core with self-managed, cloud, and serverless deployment paths
  • Real-time incremental graph updates without batch recomputation
  • Temporal model tracks when facts were valid, not just current state
  • Hybrid semantic + keyword + graph search out of the box
  • Open source with an active commercial backer in Zep
  • MCP server lets Claude Desktop and Cursor read agent memory directly
Cons
  • Steeper learning curve and operational overhead than purpose-built vector DBs like Pinecone or Qdrant
  • JVM cluster tuning (heap, shards, HNSW parameters) is non-trivial at scale
  • Cloud Hosted pricing is opaque compared to per-vector pricing of newer competitors
  • License change (Elastic License v2 / SSPL) blocks some managed-service resellers
  • Latency-sensitive pure-vector workloads can be beaten by specialised ANN-only engines
  • Requires running a graph database like Neo4j
  • LLM calls during ingestion add cost vs plain vector RAG
  • Steeper learning curve than drop-in RAG libraries
Websitewww.elastic.cohelp.getzep.com
Pick Elasticsearch Vector Search if
  • True hybrid retrieval — BM25 + dense + sparse (ELSER) in one query with reranking
  • Filters, aggregations, geo, and time-series in the same index, so one cluster serves search + analytics + RAG
  • `semantic_text` field handles chunking and embedding calls automatically at ingest
  • Better Binary Quantization slashes vector RAM footprint dramatically for billion-scale corpora
Pick Graphiti if
  • Real-time incremental graph updates without batch recomputation
  • Temporal model tracks when facts were valid, not just current state
  • Hybrid semantic + keyword + graph search out of the box
  • Open source with an active commercial backer in Zep