DataStax Astra DBVector search NoSQL database built on Apache Cassandra.
vs
OpenSearchThe open engine for AI-powered search and observability
Comparison · Vector Databases · weekly run Nov 2
DataStax Astra DB vs OpenSearch
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
OpenSearch is the stronger AI pick in Vector Databases: it has a visibility score of 3.9 versus 3 for DataStax Astra DB.
Choose DataStax Astra DB if…
- You need a self-hosted or on-premises option
- You need HIPAA or PCI DSS or SOC 2 or ISO/IEC 27001 coverage
- You prefer a larger, established vendor (5,000+ employees)
- Integrated vector search in one serverless NoSQL database
Choose OpenSearch if…
- You want the brand AI engines rank higher (3.9 vs 3)
- Strong general database popularity
- Hybrid keyword-plus-semantic search with dense vectors
- Suited to broader search, logging, analytics, and observability
AI visibility side by side
Latest weekly run · Nov 2
| Metric | DataStax Astra DB | OpenSearch |
|---|---|---|
| Visibility score | 3% | 3.9% |
| Change vs last week | New | New |
| Rank in Vector Databases | #18 | #16 |
| Share of voice | 1.1% | 1.7% |
| Mentions this run | 5 | 8 |
| Positive in AI answers | — | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
DataStax Astra DB 0pp · OpenSearch 0pp over 0 weekly runs.
Engine by engine
OpenSearch leads on 2 of 3 engines
ChatGPT
AI Mode
Perplexity
DataStax Astra DBOpenSearch
Head to head in AI answers
0 engine answers name both brands
0DataStax Astra DB ranked higher
0OpenSearch ranked higher
Features, pricing & fit
| Dimension | DataStax Astra DB | OpenSearch |
|---|---|---|
| Deployment | Cloud database-as-a-service; HCD for on-premises or private cloud | Self-managed, or through Amazon OpenSearch Service and managed providers such as Aiven and Instaclustr. A Kubernetes operator is available for managing clusters. |
| Compliance | HIPAA, PCI DSS, SOC 2, ISO/IEC 27001 | — |
| Support | Documentation | Community forum, Slack, GitHub, Long-term support from certified providers |
| Founded | — | 2021 |
| Headquarters | — | San Francisco, CA, United States |
| Employees | 5,000+ | 51–200 |
| Funding | Undisclosed round (last round per Tracxn) | — |
| Best for | Enterprises building generative AI and retrieval-augmented generation applications that need scalable NoSQL storage with vector search. | Organizations that want search, vector retrieval, and observability on open source software without vendor lock-in. |
Pros and cons
Themes from the AI answers that mention each brand
DataStax Astra DB
- Integrated vector search in one serverless NoSQL database
- Annual commitment and volume discounts
- Built on Apache Cassandra
OpenSearch
- Strong general database popularity
- Hybrid keyword-plus-semantic search with dense vectors
- Suited to broader search, logging, analytics, and observability
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “DataStax Astra DB vs OpenSearch”, https://slateindex.ai/compare/datastax-astra-db-vs-opensearch, data of Nov 2, 2026. Licence: CC BY 4.0.