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Elasticsearch vs OpenSearch

Elasticsearch is a similar search engine but under a different license; OpenSearch remains fully Apache-2.0.
ElasticsearchDistributed search and analytics engineOpenSearchOpen-source search and analytics suite

Which to pick

Pick Elasticsearch if you want…

  • Unified search-analytics-AI platform
  • Search & analytics with open source license
  • Integrations with Java, Python or Go (on Elasticsearch's list, not OpenSearch's)

Pick OpenSearch if you want…

  • Vendor-neutral search & analytics platform
  • Integrations with Apache Lucene or OpenSearch Dashboards (on OpenSearch's list, not Elasticsearch's)

Side by side

What it is
Elasticsearch:Elasticsearch is an open-source distributed search, analytics and vector database engine for fast, scalable data retrieval.
OpenSearch:OpenSearch is an Apache-2.0 licensed open-source suite for search, analytics, observability and security.
Best for
Elasticsearch:Unified search-analytics-AI platform
OpenSearch:Vendor-neutral search & analytics platform
Who it’s for
Elasticsearch:Developers building search, observability, security or AI-driven applications
OpenSearch:Developers and enterprises building search, log analytics, and monitoring solutions.
Pricing
Elasticsearch:Open source
OpenSearch:Open source
Open source
Elasticsearch:Yes
OpenSearch:Yes, 13,800 GitHub stars
Works with
Elasticsearch:Java, Python, Go, Kibana, AWS, Google Cloud, Azure
OpenSearch:Apache Lucene, OpenSearch Dashboards

Elasticsearch features

  • Hybrid Search. Combines full-text, filters and vector similarity for precise relevance.
  • Real-time Analytics. Aggregates high-cardinality data instantly for observability and security use cases.
  • Geospatial Engine. Supports geo-distance, polygons and hexagonal analytics on location data.
  • Serverless & Hosted Deployments. Offers fully managed serverless or hosted clusters on major clouds.
  • Rich Ecosystem. 350+ integrations, language clients and ingest pipelines for easy data ingestion.
  • Vector Database. Stores and searches dense and sparse embeddings for AI and RAG applications.

OpenSearch features

  • Distributed Search Engine. Scalable, high-performance search built on Apache Lucene.
  • OpenSearch Dashboards. Integrated visualization UI for data exploration and reporting.
  • Machine Learning & AI. Vector search and anomaly detection for AI-driven applications.
  • Observability Stack. Log analysis and infrastructure monitoring across hybrid or multicloud environments.
  • Security Analytics. Real-time threat detection, threat intelligence and event correlation.
  • Built-in Security. Enterprise-grade authentication, encryption and access controls.

Elasticsearch vs OpenSearch FAQ

Is Elasticsearch or OpenSearch free?+

Yes, both are free and open source.

Is Elasticsearch or OpenSearch open source?+

Yes, both are open source: Elasticsearch and OpenSearch (opensearch-project/OpenSearch on GitHub, Apache-2.0 license).

Do Elasticsearch and OpenSearch integrate with the same tools?+

Their integration lists don't overlap: Elasticsearch lists Java, Python, Go, Kibana and 3 more; OpenSearch lists Apache Lucene and OpenSearch Dashboards.

On DevHunt

Elasticsearch

Listed by DevHunt

Elasticsearch on DevHunt →Elasticsearch alternatives

OpenSearch

Listed by DevHunt

OpenSearch on DevHunt →OpenSearch alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.