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Sonic vs Elasticsearch: catalog facts
Sonic	Elasticsearch
Free Free and open source under the Mozilla Public License 2.0.	Freemium Free to download and self-host; Elastic sells a hosted cloud service with a free trial.
Linux, Self-hosted	Windows, Self-hosted
Very low memory use compared with Elasticsearch Schema-less, with no index mapping to define	Full-text, vector and hybrid search through one API Scales horizontally across a cluster
Returns identifiers, not stored documents, so a separate database is needed Uses its own protocol rather than a familiar HTTP API	Running and tuning a cluster takes operational effort Aimed at developers and operators rather than end users
Self-hosted	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License: MPL-2.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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