compare
Elasticsearch vs OpenSearch Kubernetes Operator
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Elasticsearch | OpenSearch Kubernetes Operator |
|---|---|---|
| Language | Java | Go |
| Licence | Other | Apache-2.0 |
| Stars | 78k | 584 |
| Latest | v9.5.5 | v3.0.0 |
| Last push | 2026-10-06 | 2026-10-02 |
| Release cadence | about 4 days between releases | about 1 day between releases |
| Active contributors | 121+ commit authors on the default branch in the last 90 days | 8 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Elastic Cloud. Alternatives to Elastic Cloud →
Full replacementElasticsearchThe same Elasticsearch, with Kibana installed alongside, run on your own machines.
PartialOpenSearch Kubernetes OperatorDeploys, scales and upgrades OpenSearch and OpenSearch Dashboards on your own Kubernetes cluster; OpenSearch APIs have diverged from Elasticsearch.
Elasticsearch
OpenSearch Kubernetes Operator
- v3.0.02026-09-25Remove unnecessary label when create the index.yaml pr
- opensearch-operator-3.0.142026-09-25The OpenSearch Operator Helm chart for Kubernetes
- v3.0.0-beta2026-09-23Support multi-arch downloads for helm docspre-release
- opensearch-cluster-3.3.52026-09-22A Helm chart for OpenSearch Cluster
- opensearch-operator-3.0.122026-09-22The OpenSearch Operator Helm chart for Kubernetes
Elasticsearch
✓ signed The latest release, v9.5.5, carries a signature GitHub verified.
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OpenSearch Kubernetes Operator
✓ signed The latest release, v3.0.0, carries a signature GitHub verified.
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