- Pick it if you are:
- Teams with DevOps/search expertise; Large-scale enterprise deployments
- Top complaint:
- Steep learning curve and complex management
- Price:
- Free plan, paid from $99/mo
- Pick it if you are:
- Teams self-hosting logs and observability; AWS-centric engineering teams
- Top complaint:
- OpenSearch cluster status red or yellow
- Price:
- Free plan, paid from $733.65/mo
Score Comparison
Signals Comparison
Elasticsearch
- Steep learning curve and complex management(8/10)
OpenSearch
- Docker/quickstart fails: admin password and vm.max_map_count(6/10)
Elasticsearch
- Resource-hungry infrastructure drives costs up(8/10)
- Elastic Cloud pricing lacks transparency(6/10)
OpenSearch
- Amazon OpenSearch Service gets expensive(7/10)
Elasticsearch
- 2021 SSPL license change damaged trust(7/10)
OpenSearch
No signals
Elasticsearch
- Upgrades involve breaking changes and refactoring(7/10)
- Slow to load large data sets(6/10)
- Requires specialized skill set to manage(6/10)
- Poor and confusing user interface(5/10)
OpenSearch
- OpenSearch Dashboards 'server is not ready yet'(6/10)
- Upgrades and Elasticsearch migrations are not drop-in(7/10)
- Managed service limits: no SSH, no opensearch.yml(5/10)
Elasticsearch
- Shard management problems at scale(7/10)
- Indexing lag and merge storms under load(7/10)
OpenSearch
- JVM memory pressure and OutOfMemory crashes(8/10)
- Too many shards: shard limit exceeded(7/10)
- 429 Too Many Requests and rejected bulk indexing(7/10)
- Slow indexing and merge pressure without tuning(6/10)
Elasticsearch
No signals
OpenSearch
- OpenSearch cluster status red or yellow(8/10)
- Disk watermark makes indices read-only(8/10)
Elasticsearch
No signals
OpenSearch
- Elastic clients and Beats refuse to connect(5/10)
- Custom plugins break on every version(5/10)
Pricing Comparison
Elasticsearch
Users: N/A
Storage: Unlimited (your infrastructure)
Limits: No commercial support, security features limited, requires in-house expertise
Users: N/A
Storage: Based on deployment
Limits: Standard support only, some ML features require higher tier
Users: N/A
Storage: Based on deployment
Limits: Still usage-based, enterprise features in higher tiers
Users: N/A
Storage: Custom
Limits: Requires sales engagement, pricing varies widely
OpenSearch
Users: Unlimited
Storage: Limited only by your hardware
Limits: No managed upgrades, no automatic snapshots, no support SLA, you handle scaling and recovery
Storage: EBS billed separately (about $0.122-0.135 per GB-month in the AWS example)
Limits: No SSH or config file access; some limits need a support case
Storage: Storage billed per GB-month (about $0.02 in AWS example)
Feature Comparison
| Feature | Elasticsearch | OpenSearch |
|---|---|---|
| Search | ||
| Full-Text Search Core capability | ||
| Full-text search | ||
| Vector (k-NN) search | ||
| Infrastructure | ||
| Distributed Scaling Horizontal | ||
| Analytics | ||
| Analytics/Aggregations Powerful | ||
| Log analytics and Dashboards | ||
| AI | ||
| Vector Search Native support | ||
| Security | ||
| Built-in security plugin Included in the open-source distribution | ||
| UI | ||
| Kibana Visualization Included | ||
| Operations | ||
| Index State Management Equivalent of Elastic ILM, different API | ||
| Zero-ops setup Shards, heap and disk need monitoring | ||
| Low Operational Overhead High overhead | ||
| Ecosystem | ||
| Elastic Stack (ELK) Full platform | ||
| Hosting | ||
| Managed cloud service Amazon OpenSearch Service; other vendors host it too | ||
| Licensing | ||
| AGPL Open Source Since 2024 | ||
| Integrations | ||
| Elastic client/Beats compatibility Needs OSS/Apache builds | ||
| Onboarding | ||
| Easy Setup Steep learning curve | ||
| Pricing | ||
| Predictable Pricing Complex | ||
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