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OpenSearch vs Elastic Stack: catalog facts
OpenSearch	Elastic Stack
Free Free and open source. Hosting, hardware and any external services are separate.	Freemium Components can be downloaded for free; hosted service and advanced features are paid.
Self-hosted	Self-hosted
Provides distributed search and aggregation Works with OpenSearch Dashboards for visualization	Long-established standard for central log analytics Ingests data from many sources and formats
Production clusters require capacity planning and ongoing administration.	Several separate services to deploy and maintain Some features are only available from Elastic's paid offerings
Self-hosted	Self-hosted, Hosted service
Open source	Closed source
License: Apache-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.