compare
OpenSearch vs Sonic
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | OpenSearch | Sonic |
|---|---|---|
| Language | Java | Rust |
| Licence | Apache-2.0 | MPL-2.0 |
| Stars | 14k | 21k |
| Latest | 3.9.0 | v1.10.2 |
| Last push | 2026-10-06 | 2026-10-05 |
| Release cadence | about 43 days between releases | about 2 days between releases |
| Active contributors | 104 commit authors on the default branch in the last 90 days | 5 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Elasticsearch. Alternatives to Elasticsearch →
Full replacementOpenSearchFork of Elasticsearch 7.10.2, APIs have diverged since.
PartialSonicA lightweight index that returns document IDs only, next to the database that holds the documents.
OpenSearch
- 3.9.02026-09-29Compatible with OpenSearch and OpenSearch Dashboards version 3.9.0
- 3.8.02026-08-05Compatible with OpenSearch and OpenSearch Dashboards version 3.8.0
- 2.19.62026-07-06Compatible with OpenSearch and OpenSearch Dashboards version 2.19.6
- 3.7.02026-06-09Compatible with OpenSearch and OpenSearch Dashboards version 3.7.0
- 3.6.02026-04-07Compatible with OpenSearch and OpenSearch Dashboards version 3.6.0
Sonic
- v1.10.22026-10-05Sonic v1.10.2
- v1.10.12026-09-25Sonic v1.10.1
- core-v0.4.12026-09-25Sonic core v0.4.1
- v1.10.02026-09-21Sonic v1.10.0
- client-v0.6.02026-09-21Sonic client v0.6.0
OpenSearch
✓ signed The latest release, 3.9.0, carries a signature GitHub verified.
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Sonic
✓ signed The latest release, v1.10.2, carries a signature GitHub verified.
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